Malicious PDF — malware analysis report

Static analysis result for SHA-256 941aff2688a5b863…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 13:33:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: e95dbfea1c85e358d5ed5196ec376a46 SHA-1: 389e95d5f238aa9f11c800ff88b24dd7e51a3763 SHA-256: 941aff2688a5b86342a067953435f007086f4145babace30baca3f9e9d901361
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.tw/app/479516143/is-minecraft-java-edition-free-game-hack In PDF document text
    • http://library.imz.or.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-minecraft-skin-creator_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/kid-caught-cheating-on-his-roblox-gf_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/open-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-get-free-robux-no-hack-april-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://library.imz.or.id/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/client-hack-roblox-2021-download_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-robux-using-inspect_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://library.imz.or.id/repository/nuevo-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/a-lot-free-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://library.imz.or.id/repository/hack-spin-coin-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
font_00_sfnt_off00003023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3023 22808 bytes
SHA-256: 2f8cb6ea77ca081a25b4bafa7742920a28e4913a0ffa8dc22fca4e2047a347c5
font_01_sfnt_off000062fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FA 18452 bytes
SHA-256: 31a4a06d9fb355d17720bdbd4e924d787a36c109291985566279346bb5d94ffc