[jklmnn] drew inspiration from the work of [Ange Albertini] who has documented a way to hide Javascript within the header of a .gif file. Not only does it carry the complete code but both image ...

The authors turned to polyglot images to add the JavaScript code that redirects to a page offering a fake reward. The malicious code is hidden in a BMP type of picture and it is heavily obfuscated.

It’s in this code, in this case the strData variable ... a researcher and pen tester at the German firm Cure 53 warned that image binaries in Javascript could be used to hide malicious payloads ...

In an attempt to bypass increasingly effective measures available to detect malicious ads, the images used steganography—the ancient practice of hiding code, messages, or other data inside ...