“Injecting malicious code into the HTML used on legitimate Web sites is a key part of the infection lifecycle for many attack crews, and they often disguise and obfuscate their code to make it more difficult to analyze or so it appears to be legitimate code. The latest instance of this technique has seen attackers employing code that is meant to look like Google Analytics snippets, but instead sends victims off to a remote site that's hosting the Black Hole Exploit Kit. Not the desired result….”

The original article/video can be found at Attackers Using Fake Google Analytics Code to Redirect Users to Black Hole Exploit Kit