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PDF is Broken: a justCTF Challenge
blog.trailofbits.com | blog | #ctf | #steganography | #pdf | #trail-of-bits | #forensics | #file-format | #polyglot | #polyglot-files
Summary
Trail of Bits engineers crafted a justCTF challenge exploiting PDF format quirks: a Ruby/PDF polyglot that runs as a script while rendering as a blank page, teaching steganography and forensic tricks.
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