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Windows 7: Zeus botnet exploits unpatched PDF flaw

15 Apr 2010   #1

Windows 7 Ultimate x64, XP Mode, W8.1 Preview VM - 7 Pro x64 second remote tower
 
 
Zeus botnet exploits unpatched PDF flaw

Quote:
Zeus botnet exploits unpatched PDF flaw

Researchers spot first widespread attack using Reader, Acrobat design flaw

By Gregg Keizer
April 15, 2010 04:01 PM ET

Computerworld - The Zeus botnet is now using an unpatched flaw in Adobe's PDF document format to infect users with malicious code, security researchers said today.

The attacks come less than a week after other experts predicted that hackers would soon exploit the "/Launch" design flaw in PDF documents to install malware on unsuspecting users' computers.

The just-spotted Zeus variant uses a malicious PDF file that embeds the attack code in the document, said Dan Hubbard, CTO of San Diego, Calif.-based security company Websense. When users open the rogue PDF, they're asked to save a PDF file called "Royal_Mail_Delivery_Notice.pdf." That file, however, is actually a Windows executable that when it runs, hijacks the PC.

Zeus is the first major botnet to exploit a PDF's /Launch feature, which is, strictly speaking, not a security vulnerability but actually a by-design function of Adobe's specification. Earlier this month, Belgium researcher Didier Stevens demonstrated how a multistage attack using /Launch could successfully exploit a fully-patched copy of Adobe Reader or Acrobat.
More at: Zeus botnet exploits unpatched PDF flaw - Computerworld

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