Spam mails in PDF format.

Spamming and spam mails are a great threat to the security of internet. Once mails containing embedded images are considered spam. But it is time to change this belief. Spam mails may also occur in the form of pdf documents.

Spam mails in the form of pdf documents have increased a lot in the past few years. PDF documents are considered safe mostly because it is the format used for creating office documents and e-books. So internet users are generally not hesitant in opening such documents. Spammers are taking advantage of this weakness of surfers. It is a common instinct to believe what is told in a pdf document than a document in HTML format or other formats, just because of its “official” status pdf format have achieved over the years.
Spam mails in pdf formats are generally targeted towards users interested in share market.There are a number of pump and dump packs that will “educate” users about the current boom that is going to happen to a particular share and the huge benefit users can make by investing on these shares. These documents have nice and beautiful layout and are well organized. So most users believe the “confidential” document they have received and become victims. Once the share values of the fake company increases the real people behind the company sell their shares for huge profit and the users who buy these shares lost their money.
The spammers once used embedded images to beat spam filters. But the spam filters have improved a lot over the years and most of the spam mails are blocked efficiently by them. So for spammers, they need a new way to survive and using pdf format to send spam mails is the way they find. Moreover, since pdf documents are used for creating office documents and is the most popular document format on the internet the success rate of spam mails is also huge compared to old spam mails.So be careful and think for a second time before believing what is said in a pdf mail you received.