Today I’ve received maybe most annoying type of spam.

Image spam, but instead an embedded image it was hidden as attached PDF file.

Really annoying especially if you verify your mail via webmail and by the Murphy’s law you do not have PDF reader installed.

You are forced to download attachment(small) and reader(huge) to see that it is a spam.

Here is how it looks:

Let’s see what will be the response of anti spam products.