Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf20067622e61b12…

MALICIOUS

PDF

43.7 KB Created: 2021-05-12 08:39:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b66c9d19f09e9ce540c5f1872166b3af SHA-1: 412568bf1dbe87b3ee14b6f83c10ec348865175b SHA-256: bf20067622e61b12da21f2cd3b6a2f43e14e173ad3ce0b016520f64e9c9edfa9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with a malicious link. The embedded URL, https://netcdn.xyz/app/431946152/mathep-game-hack, likely serves as a download point for a secondary payload. Numerous other URLs pointing to game-related hacks and freebies were also extracted, reinforcing the lure-based social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/mathep-game-hack
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/minecraft-kill-aura_GM479516143.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/update-coin-master-free-spins_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/roblox-bux-free_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/coin-master-online-hack-no-human-verification_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/roblox-army-free-robux_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-hack-robux_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/roblox-but_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/free-robux-glitch-2021_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021-today_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/free-card-collection-in-coin-master_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/hack-coin-master-online-without-human-verification_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/coin-master-game-hack-link_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/coin-master-400-spin-link-hack_GM406889139.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-get-free-robux-without-email_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://ppl.man2kediri.net/__statics/gudangsoal/files/roblox-its-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004932.bin
8b5455b6f29b57400d8c90bbe38e7950bf6231da0c7b458e59058396056db3cb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4932 27896 bytes
font_01_sfnt_off0000890a.bin
2b3a9c081553d581a827df65dee23cc3b514f38b63125b20306762026e644864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x890A 18068 bytes

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