Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b636322c760118e…

MALICIOUS

PDF

45.3 KB Created: 2021-06-09 02:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 44649c98e191d991540c6da816668d37 SHA-1: 959902119c2cce69c8b43eb8b70332bf5ee5c1f0 SHA-256: 2b636322c760118e9785b32a79029eb5bb06797a5c189d02e61ea472a720bbe8
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/google-how-do-we-get-free-robux-game-hack In PDF document text
    • https://digilib.darmajaya.ac.id/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/robux-converter_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox-robux-hack-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/martian-lettuce-coin-master-free_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.darmajaya.ac.id/repository/coins-master_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
stream_004_off0000512d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x512D 25536 bytes
SHA-256: 389ffc97155ebae0b3ac01f52486e070ce4eaf30117c688acf44d03f152ff978
font_01_sfnt_off00008c27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C27 19008 bytes
SHA-256: 25cb7b6c961cf92dcb71209d00ef429f8f717db85377924daf58ea2468a3c290

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