What is the transmogrify anti-forensics technique?

The transmogrify anti-forensics technique refers specifically to the act of modifying the file header of a malicious file to disguise it as another file type. This type of manipulation helps evade detection by signature-based security tools and forensics analysis systems that rely on file headers to determine file type and purpose.

For example, a malicious .exe file might have its header changed to appear as a .jpg or .pdf to trick analysts or automated systems into treating it as benign. This tactic is particularly effective in bypassing content filtering and malware detection solutions that do not perform deep inspection beyond headers.