FE ED FA CF

OS X ABI Mach-O binary (64-bit)

category: file-signature
normalized: feedfacf
confirmed: 2026-03-15
lookups: 1
source: https://www.garykessler.net/

OS X ABI Mach-O binary (64-bit). Kessler type: Programming.

Similar magic numbers

value	name	category
0xFEEDFACE	Mach-O binary (32-bit)	file-signature
FE ED FE ED	JavaKeyStore	file-signature
FE EF	Symantex Ghost image file	file-signature
0xFEEEFEEE	Win32 freed heap	sentinel
FE FF	UTF-16-UCS-2 file	file-signature