PDF Stock Spam

Over the last week or so, I have been receiving spam in the somewhat unusual form of PDF email attachments. The spam emails generally have no text and use random subject lines such as "Re: Magazine.40031374.pdf".

Opening the .pdf attachment reveals a Pump and Dump message like the one shown below:

PDF Spam

Scammers are apparently using PDF rather than the more typical image files as a new means of avoiding spam filters. Filters are becoming more sophisticated and are now better able to detect image spam, so the spammers are looking to new methods.

posted by Brett Christensen @ 7:56 PM,

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