A program or technique that takes advantage of a vulnerability to remotely access or attack a program, computer or server.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note You need administrative rights to change the settings.
Exploit:W32/Pidief.CPT is a maliciously-crafted PDF file that exploits a known vulnerability (CVE-2010-1297) in certain versions of Adobe Acrobat Reader.
If successfully exploited, the malware may be able to forward system information to a remote server for further mischief. At time of analysis however, the URL used for the connection was down.
This PDF file may be distributed via a targeted email; alternatively, it may be hosted on a malicious site. F-Secure Exploit Shield is able to block this exploit.
More information about the targeted vulnerability is available at: http://www.adobe.com/support/security/advisories/apsa10-01.html.
Once found, the malware decrypts the data located after the tag. In the sample analyzed, the data is actually two components:
The malware then saves the decrypted data to the following location:
The decrypted executable seems to be a downloader that drops a small .DLL component to the system32\ and system32\dllcache folders. The dropped component uses the filename 'qmgr.dll'; the original original 'qmgr.dll' is renamed to 'kernel64.dll'.
The malware then creates a file to C:\Windows\ folder with the filename, 'Eventsystem.dll'. This is a copy of the DLL file.
Finally, the malware creates a file named 'es.ini' to Windows\system32 folder, containing the following information:
The PDF file also contained a Flash file, which didn't appear to do anything.