Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ac3c13f36dc57f…

MALICIOUS

PDF

34.6 KB Created: 2021-07-05 17:13:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 59fbe542381fda83dd5f3324e8e97f27 SHA-1: de20ef53055454e6f2c978892dce607c066bb564 SHA-256: 54ac3c13f36dc57fffaf511f386175fa0d289baa60046f2c133efff3c8eaa4ea
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to game hacks and free in-game currency, directing users to external URLs. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous game-related URLs strongly indicate a phishing or scam attempt. Although no scripts were explicitly extracted, the document's structure and embedded links suggest it is designed to redirect users to potentially malicious sites.

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/watch-videos-for-robux-game-hack PDF link annotation
    • http://lib3tell.stptrisakti.net/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/comment-avoir-des-robux-gratuit-2021-sans-hack_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-free-items-from-catalog_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-sword-fighting-hack_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/cheat-tower-battles-roblox_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net//repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib3tell.stptrisakti.net/repository/coin-master-mod-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_off0000306d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306D 21832 bytes
SHA-256: 04955a717025ea66ca72b61fa9ab56189be60d193551d70dfedfa782580e15c9
font_01_sfnt_off00006069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6069 19612 bytes
SHA-256: 40ad7de4b9946de06c7051d7b0765d6ae30e92e57daaefd71a8c8f9bb444c2e9

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