For those of you who are fans of the various challenges, the Honeynet Project has released challenge 6 in their 2010 forensics series.

"PDF format is the de-facto standard in exchanging documents online. Such popularity, however, has also attracted cyber criminals in spreading malware to unsuspecting users. The ability to generate malicious pdf files to distribute malware is functionality that has been built into many exploit kits. As users are less cautious opening PDF files, the malicious PDF file has become quite a successful attack vector. [1]"

[1] http://honeynet.org/challenges/2010_6_malicious_pdf

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Guy Bruneau IPSS Inc. gbruneau at isc dot sans dot org