Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7ad3b5b430cd77d…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 04:05:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 045f6d6d8d0500417b173fb7868f28b2 SHA-1: bdfb959f3b37243adc99d804eee245e189b6c400 SHA-256: f7ad3b5b430cd77d44e5bce8a96657282ec89ddf333ebb8b02fc26c887b0c0e7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Wall Hack Roblox 2021' and links to external URLs, indicating a phishing or scam attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly suggests the document is designed to redirect users to potentially malicious content. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious activity.

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.co/app/431946152/wall-hack-roblox-2021-game-hack PDF link annotation
    • http://perpusfkip.upstegal.ac.id/repository/robux-generator-app-hack_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-roblox-promo-codes-list_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/comoobtener-robux-usando-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/fill-in-form-for-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/in-roblox-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-theme-park-tycoon-2-cheat-engine_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/robux-fun-hack_GM431946152.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_off00003164.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3164 22100 bytes
SHA-256: 804299e236c7c8c06550a3bebb4898159f918da0d92660b19fa7889d087eb43a
font_01_sfnt_off000061c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C2 19256 bytes
SHA-256: 9afb0b45a99ef7c862c666e1cc329073d84893032632476c79dcddd63eac1157

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