If this is part of a puzzle, the "JUSTaFiLed" prefix is a hint that the file is a container for something else.
: Test the string against a Caesar Cipher or Vigenere Cipher . JUSTaFiLedsfobrlnhpmp4
The suffix sfobrlnhp may be an encoded message or a password for a hidden archive within the file: If this is part of a puzzle, the