Severe Detected with Windows Defender Antivirus
Aliases: CVE-2009-0658 (other) Bloodhound.Exploit.213 (Symantec)
Exploit:Win32/Pidief.B is a detection for an exploit that targets a Portable Document Format (PDF) vulnerability. The critical vulnerability could result in the installation of additional malware when a malicious PDF document is opened using Adobe Reader version 9, or earlier.
Manual removal is not recommended for this threat. To detect and remove this threat and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as the Microsoft Safety Scanner (http://go.microsoft.com/fwlink/?LinkId=212742). For more information, see http://www.microsoft.com/protect/computer/viruses/vista.mspx.