PDF Pump and Dumps Spam/Scam Mail

Have you noticed a few more 'pump and dump' spam messages in your inbox? Noticed that they are pdf-based? ("Pump and dump" spam tells you about the latest 'hot buy' of some obscure stock. What they don't tell you is that the spammer will be making money on the temporary upswing of the stock due to victim's buys, and the stock price will quickly drop down so you will lose your investment.)

Turns out that spammers are using pdf-based messages, since they are easily made, but harder to block because the characters are distorted a bit in the message.

More info about the spam messages here: http://www.avertlabs.com/research/blog/index.php/2007/06/26/pdf-spam-outbreak/ . And some 'pump and dump' basics here: http://www.investopedia.com/ask/answers/05/061205.asp .

As with all spam, the best practice is to just hit the delete key.