Today I downloaded a game (Grand theft auto Vice City) from a trusted site for free, when I downloaded it, I pressed on the installer, I was watching it install, because I had nothing else to do. When the install finished random sites started popping up on my browser, I instantly restarted my computer..when my computer restarted, I saw 3 new files on my desktop all named "Grand theft auto Vice City....." I instantly deleted them before anything could happen again, because I was scared. My next thought was to download a malware software that can detect things like this. Once I scanned my pc, it detected like 8 files and 3 of them had "Trojan" in their name, I instantly quarantined the files and deleted them afterwards. Then I ran adwcleaner (maybe it could detect something else), it didn't detect anything. Now in this position, I don't know if I am actually safe or if there could be something hidden.