This will tell you if it is an actual GZIP compressed file, a script, or an executable binary.
It likely serves as a "fuck-off" implementation of a GZIP compressor—meaning a version built to be extremely fast, extremely simple, or to ignore specific GZIP header standards that the developer found frustrating. 3. CTF (Capture The Flag) Challenges fckrgzip
It could be a custom wrapper for the standard gzip utility, used to bypass automated security scanners that look for common filenames. This will tell you if it is an