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Exploit:Win32/Pdfjsc.YX
Aliases: Trojan-Downloader.JS.DarDuk.ff (Kaspersky) JS/Exploit.MH (Norman) Script/Exploit.Kit (AVG) JS/Blacole.E (Avira) Exploit.JS.Blacole (Ikarus) JS/Downloader (McAfee) Troj/ExpJs-CI (Sophos)
Summary
Exploit:Win32/Pdfjsc.YX is a specially-crafted JavaScript, which exploits a vulnerability in the Java Runtime Environment, Adobe Acrobat, and Adobe Reader discussed in the following articles:
To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat:
For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.
Use up-to-date software
This malware exploits known vulnerabilities in Java Runtime Environment (JRE), Adobe Acrobat, and Adobe Reader. After removing this threat from your computer, install the updates available from the vendor. You can read more about these vulnerabilities, as well as where to download the software update from the following links:
It may be necessary to remove older versions of Java that are still present. Keeping old and unsupported versions of Java on your system presents a serious security risk. To read more about why you should remove older versions of Java, see the following information.