Malicious PDF — malware analysis report

Static analysis result for SHA-256 997e2f7ff50cc785…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 01:26:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 67012a95342dc5270590a3583811f0d3 SHA-1: c3f31cd0dc5ca22dcfdbdac797c6ceb59308ec48 SHA-256: 997e2f7ff50cc7855ea6b5ec6f2a189f0d48aa8c80ee0693b6f6dea9141273d6
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 0.9980

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 http://netcdn.tw/app/431946152/roblox-free-printables-game-hack PDF link annotation
    • http://projectunionstreet.com/library/repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-game-packs-for-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-the-hunger-games-cheats_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-do-i-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/mcpe-master-hack-unlimited-coins-apk_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
font_00_sfnt_off000031dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DC 22152 bytes
SHA-256: 5b7729557df5306370f522f44a1acbb114dd5819217d7c86044a1b8874c536a1
font_01_sfnt_off000062e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E2 19028 bytes
SHA-256: ad7b98b6c4c92f588d5c4596e7e9a65ea7f2730b67aeb24bb8301345df065d3f

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