Last week, I found an interesting piece of phishing based on a PDF file. Today, most of the PDF files that are delivered to end-user are not malicious, I mean that they don’t contain an exploit to trigger a vulnerability and infect the victim’s computer. They are just used as a transport mechanism to deliver more malicious content. Yesterday, Didier analyzed the same kind of Word document[1]. They are more and more common because they are (usually) not blocked by common filters at the perimeter.
Article Link: InfoSec Handlers Diary Blog - SANS Internet Storm Center