Malicious PDF — malware analysis report

Static analysis result for SHA-256 8341d2d44566451d…

MALICIOUS

PDF

45.4 KB Created: 2021-06-04 02:36:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6f29f69a7ce9666ee672b51e1a74720b SHA-1: abc435332cf6cd678dcdda1942a4943a31a5c4f4 SHA-256: 8341d2d44566451dfcb54c40e7c82aa6666cbcec69cce03670f3e01428d1cb13
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.online/app/431946152/free-robux-no-password-game-hack PDF link annotation
    • http://lib.untad.ac.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/roblox-free-vip-server_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spin-links-december-30-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/hack-coin-master-dzooka_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-brick-master-cheat-video_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50FB 26452 bytes
SHA-256: 38bfb60581e7d0e4be82b10f0fa046401c63206e63f9e9d285009e77e24f2eb9
font_01_sfnt_off00008da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA1 18732 bytes
SHA-256: b254955316d184f98c6f6070526605807868e3146c8b9e5f8ca39f20861b2296

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