PDF and Flash files under threat from cryptic code
PDF and Flash files are under attack by criminals using code obfuscation' and the latest Web 2.0 techniques, according to a report by Finjan.
The new report claimed that malicious obfuscated code' - meaning source code or intermediate code which is very hard to read or understand - has now evolved into a serious threat.
Ben-Itzhak said this offered crimeware authors ways to inject malicious code into rich-content files used by ads and user-generated content for Web 2.0 websites.
Obfuscated code has been around a while; it has been reportedly been used since 2005 as a weapon for propagating malicious code. It was able to bypass the traditional signature-based solutions which had been used by security vendors.
Finjan claimed code obfuscation utilities and other encoding methods allowed cybercriminals to plant invisible' malicious code, which infected a user's machine every time they visited the malicious site.
Last year IT PRO looked at the threat provided by dynamic code obfuscation'.
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