On: A simultaneous OS X binary, PDF file, jar file, an...

[ange4771_]

it's not a PE, it's a (headerless) COM.

PE, ELF, and Mach-O all enforce a different signature at offset 0. Thus it's impossible to combine them - otherwise, I'd have done it already ;)

[est → ange4771_]

Getting around the offset 0 is always the hardest part in all hybrid format hacks.

I tried .vbs+.bat hybrid and .bat+.com hybrid.

[yiedyie → ange4771_]

COM doesn't have the MZ magic number.