PoC||GTFO 0x19 is out!
It's a PDF, a ZIP, and an HTML page:
If you drop it on itself in a browser,
it can give you a PDF viewer, a video
and a PNG explaining the whole file structure.
All these files have the same MD5.
I made a file that is wrongly detected with 29 different formats.
It's mostly empty: just a collection of magic signatures at the right offsets, no format is valid.