Malicious PDF — malware analysis report

Static analysis result for SHA-256 4783c811ce5c2558…

MALICIOUS

PDF

33.5 KB Created: 2021-06-30 00:50:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 134e360aa483d984553d6979e599c230 SHA-1: 076810ab0b7052e7b100b1bdb3dfe8f514d45798 SHA-256: 4783c811ce5c255859be00afdfc5203c20c5462d323c7b75c25931dcd94fe1c4
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-hack-roblox-passwords-download-game-hack In PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/norwegian-resort-music-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/mcpe-client_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/cheats-to-roblox-for-money_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/appsmob-info-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-no-human-c-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/heists-2-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-accessories-alfheim-online-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-roblox-clothes-templates_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/money-hack-in-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-stuff-roblox-2021_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_off00002dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD9 21588 bytes
SHA-256: d54ddfdef865301efbb54236026f406985c24128db5460b59c62d97b17475a1b
font_01_sfnt_off00005cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEE 19316 bytes
SHA-256: 8f62da3313b88ea13bdd19de32907c38cfb79b54f79b1c0d85c750d08e627cac

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