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

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