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What is PDF Converter HD Search?

The Malwarebytes research team has determined that PDF Converter HD Search is a search hijacker. These so-called "hijackers" manipulate your browser(s), for example to change your startpage or searchscopes, so that the affected browser visits their site or one of their choice.
This particular one is a search hijacker and uses web push notifications.

How do I know if my computer is affected by PDF Converter HD Search?

You may see this entry in your list of installed Chrome extensions:

main.png

and these warnings during install:

warning1.png

warning2.png

warning3.png

You will see this icon in your Chrome menu-bar:

icons.png

and these changed settings:

warning5.png

warning6.png

How did PDF Converter HD Search get on my computer?

Browser hijackers use different methods for distributing themselves. This particular one was downloaded from the webstore:

webstore.png

after a redirect from their website:

website.png

How do I remove PDF Converter HD Search?

Our program Malwarebytes can detect and remove this potentially unwanted program.

  • Please download Malwarebytes to your desktop.
  • Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  • Then click Finish.
  • Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  • If another update of the definitions is available, it will be implemented before the rest of the scanning procedure.
  • When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
  • Restart your computer when prompted to do so.

Is there anything else I need to do to get rid of PDF Converter HD Search?

  • No, Malwarebytes removes PDF Converter HD Search completely.
  • If you have allowed the notifications you can read here how to disable them.

How would the full version of Malwarebytes help protect me?

We hope our application and this guide have helped you eradicate this hijacker.

As you can see below the full version of Malwarebytes would have protected you against the PDF Converter HD Search hijacker. It would have blocked their website, giving you a chance to stop before it became too late.

 

protection2.png


Technical details for experts

Possible signs in FRST logs:

 

CHR DefaultSearchURL: Default -> hxxps://feed.pdfconverterhd.com/?q={searchTerms}&publisher=pdfconverterhd&barcodeid=560810000000000
CHR DefaultSearchKeyword: Default -> PDFConverterHD
CHR DefaultSuggestURL: Default -> hxxps://api.pdfconverterhd.com/suggest/get?q={searchTerms}
CHR Extension: (PDFConverterHD) - C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf [2019-10-11]

Alterations made by the installer:
 

File system details [View: All details] (Selection)
---------------------------------------------------
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0
       Adds the file manifest.json"="10/11/2019 9:07 AM, 2129 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\_metadata
       Adds the file computed_hashes.json"="10/11/2019 9:07 AM, 6088 bytes, A
       Adds the file verified_contents.json"="10/4/2019 2:11 AM, 1921 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\images\icons
       Adds the file 128x128.png"="10/11/2019 9:07 AM, 8538 bytes, A
       Adds the file 16x16.png"="10/11/2019 9:07 AM, 721 bytes, A
       Adds the file 64x64.png"="10/11/2019 9:07 AM, 4008 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\scripts
       Adds the file background.js"="9/26/2019 5:01 PM, 511633 bytes, A
       Adds the file sitecontent.js"="9/26/2019 5:01 PM, 77 bytes, A
    Adds the folder C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Web Applications\_crx_boepdioacnnfechdelcnhpjkelekoajf
       Adds the file PDF Converter HD Search.ico"="10/11/2019 9:07 AM, 198469 bytes, A
       Adds the file PDF Converter HD Search.ico.md5"="10/11/2019 9:07 AM, 16 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_CURRENT_USER\Software\Google\Chrome\PreferenceMACs\Default\extensions.settings]
       "boepdioacnnfechdelcnhpjkelekoajf"="REG_SZ", "D988A72A53370F3525AAC37B03F775D1858351AE3750C7C91EC3C4A9737CDA49"

Malwarebytes log:
 

Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 10/11/19
Scan Time: 9:18 AM
Log File: 5eff5df2-ebf7-11e9-96a7-00ffdcc6fdfc.json

-Software Information-
Version: 3.8.3.2965
Components Version: 1.0.613
Update Package Version: 1.0.12853
License: Premium

-System Information-
OS: Windows 7 Service Pack 1
CPU: x64
File System: NTFS
User: {computername}\{username}

-Scan Summary-
Scan Type: Threat Scan
Scan Initiated By: Manual
Result: Completed
Objects Scanned: 234309
Threats Detected: 19
Threats Quarantined: 19
Time Elapsed: 6 min, 3 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
Heuristics: Enabled
PUP: Detect
PUM: Detect

-Scan Details-
Process: 0
(No malicious items detected)

Module: 0
(No malicious items detected)

Registry Key: 0
(No malicious items detected)

Registry Value: 1
PUP.Optional.PDFConverterHD, HKCU\SOFTWARE\GOOGLE\CHROME\PREFERENCEMACS\Default\extensions.settings|boepdioacnnfechdelcnhpjkelekoajf, Quarantined, [259], [744821],1.0.12853

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 6
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\images\icons, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\_metadata, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\scripts, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\images, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\BOEPDIOACNNFECHDELCNHPJKELEKOAJF, Quarantined, [259], [744821],1.0.12853

File: 12
PUP.Optional.PDFConverterHD, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Preferences, Replaced, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\DEFAULT\EXTENSIONS\BOEPDIOACNNFECHDELCNHPJKELEKOAJF\1.0.3_0\MANIFEST.JSON, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\images\icons\128x128.png, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\images\icons\16x16.png, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\images\icons\64x64.png, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\scripts\background.js, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\scripts\sitecontent.js, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\_metadata\computed_hashes.json, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\Users\{username}\AppData\Local\Google\Chrome\User Data\Default\Extensions\boepdioacnnfechdelcnhpjkelekoajf\1.0.3_0\_metadata\verified_contents.json, Quarantined, [259], [744821],1.0.12853
PUP.Optional.PDFConverterHD, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, [259], [744820],1.0.12853
PUP.Optional.PDFConverterHD, C:\USERS\{username}\APPDATA\LOCAL\GOOGLE\CHROME\USER DATA\Default\Secure Preferences, Replaced, [259], [744820],1.0.12853

Physical Sector: 0
(No malicious items detected)

WMI: 0
(No malicious items detected)


(end)

As mentioned before the full version of Malwarebytes could have protected your computer against this threat.
We use different ways of protecting your computer(s):

  • Dynamically Blocks Malware Sites & Servers
  • Malware Execution Prevention

Save yourself the hassle and get protected.

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