Exploit:W32/AdobeReader.UZ

Classification

Malware

Exploit

W32

Exploit.PDF-JS.Gen, Exploit.JS.Pdfka.atq

Summary

A program or technique that takes advantage of a vulnerability to remotely access or attack a program, computer or server.

Removal

Automatic action

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.

Suspect a file is incorrectly detected (a False Positive)?

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.

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Submit a sample

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Technical Details

The detection Exploit:W32/AdobeReader.UZ identifies a malicious PDF document that attempts to exploit a known vulnerability in order to drop and run a malicious executable file on the system.

The exploit-code will not drop the executable if any of the following folders exist on the system:

  • C:\Program Files\Kaspersky Lab\Kaspersky Internet Security 2009
  • C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 2009
  • C:\Program Files\Kingsoft

The vulnerability targeted lies in the Doc.media.newPlayer Javascript method (CVE-2009-4324).

Execution

The executable file embedded in the PDF will be dropped to:

  • %temp%\AdobeUpdate.exe

The dropped file will then be executed and will attempt to download additional files on to the system.

We detect the drooped file as Trojan-Downloader:W32/Agent.MRL.