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spooky pdf #179

@EnamelEmu

Description

@EnamelEmu

Entry Info

  • Date: 2026/01/18
  • BGGP Challenge: 6
  • Name: spooky PDF
  • Contact Info: n/a
  • Online Presence: x.com/EmmaStrck
  • Writeup Link: n/a

File Info

  • Target File Type: elf+pdf
  • Target File Size: 2571
  • SHA256 Hash: a7c8c8c97e413cfc6c9e66596386dbe160d0c580ac428029ef91315a235cfba9

File Contents

Please encode the file as Base64
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Environment Info

~/P/bggp6 $ uname -a
Linux flock 6.18.5-100.fc42.x86_64 #1 SMP PREEMPT_DYNAMIC Sun Jan 11 18:16:46 UTC 2026 x86_64 GNU/Linux
~/P/bggp6 $ cat /etc/system-release
Fedora release 42 (Adams)

Target Software and Version

pdf viewers, linux elf loader

Environment Setup

Description of Target Software's Environment (Platform/OS, Setup Instructions, etc.)

Additional Info

should be an executable file and a pdf, the pdf should look like this:

Image

executing the file should print a string, like this:

~/P/bggp6 $ ./elf
6
SIXSIX

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