File types

https://play.picoctf.org/practice/challenge/268?page=8

This file was found among some files marked confidential but my pdf reader cannot read it, maybe yours can.

• first we use [[file]] to check if it really is a pdf

➜  CTF file Flag.pdf 
Flag.pdf: shell archive text

• clearly not a pdf

• [[shar]] file

• unpack it with sh Flag.pdf

  • it failed

• try with unshar