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False Positive - Cypherguard for PDF treated as exploit

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Cypherguard is a PDF protection app to stop illegal distribution of protected PDFs and their content. Malwarebytes treats it as some kind of memory hook exploit & blocks it.

In this case it is definitely not malicious activity.



-Log Details-
Protection Event Date: 08/02/2021
Protection Event Time: 16:05
Log File: 31c3064d-69cb-11eb-9102-e0d55e07f52d.json

-Software Information-
Components Version: 1.0.1157
Update Package Version: 1.0.36821
Licence: Premium

-System Information-
OS: Windows 10 (Build 19041.746)
CPU: x64
File System: NTFS
User: System

-Exploit Details-
File: 0
(No malicious items detected)

Exploit: 1
Malware.Exploit.Agent.Generic, , Blocked, 0, 392684, 0.0.0, , 

-Exploit Data-
Affected Application: Adobe Reader
Protection Layer: Malicious Memory Protection
Protection Technique: Exploit code executing from Heap memory blocked
File Name: 


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  • 3 weeks later...
  • Staff
  • Solution


Apologize for the delayed response.

Please go to Malwarebytes UI, Settings->Security Tab->Advanced Settings under Exploit Protection->Advanced memory protection Tab->uncheck "Malicious return address Detection" for Pdf reader

Hope that helps. Thank you.

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