Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3527472f959a03…

MALICIOUS

PDF

32.9 KB Created: 2021-06-29 20:44:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: feb1e26049ed180bd477c42b75a10652 SHA-1: f72a6f36e37cdde2be6d998b2240fc988d9927a5 SHA-256: 4e3527472f959a030662d7897b685408a2b5a7da176eded6ad424c6a15bafd45
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-player-exe-download-free-game-hack In PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-for-free_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-obc-codes-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-an-item-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-a-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-followers-free_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-free-robux-hack-no-human-verification-youtube_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-robux-on-ipad-no-download_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/brick-cars-cheat-codes-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-hack-roblox-accounts-december-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-hack-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-does-roblox-know-if-you-hack-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/comandos-para-hackear-roblox_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_off00002a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A51 21824 bytes
SHA-256: 6ef73650fa25e324356e0a913553b0d64c1675227a09c8602bff363efee6cbb5
font_01_sfnt_off00005a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3F 19488 bytes
SHA-256: c0d54a1bce534b7cfbb7edaa55a88cba9ef38400f0b27cdb9b8aae7775290669