Malicious PDF — malware analysis report

Static analysis result for SHA-256 96b3838e2ab9fc6a…

MALICIOUS

PDF

40.9 KB Created: 2021-05-17 12:57:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: bd1a8c06e1e11905c36665b864b036b7 SHA-1: 25a73858dde95c8068d539e8accd92f4756ef575 SHA-256: 96b3838e2ab9fc6a68eadcb0bda3b1f2e8ed356c7f902aa55a0e4c0928bbbf5a
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 0.9971

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.xyz/app/406889139/card-hack-for-coin-master-game-hack PDF link annotation
    • http://montchanintt.fr/images/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-18_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-gang_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-free-robux-on-chromebook_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://montchanintt.fr/images/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://montchanintt.fr/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/generator-robux_GM431946152.pdfIn PDF document text
    • http://montchanintt.fr/images/coin-master-spin-hack_GM406889139.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_003_off00004785.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4785 23984 bytes
SHA-256: 98d6b452dae207482e35d8103ea31a3461538704abf105325d0ccde1857840ca
font_01_sfnt_off00007e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1B 18056 bytes
SHA-256: 16c04f841c276c9143b9cdeba32c018779ebf720d5ca55aa256a698217b90b2b

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