Malicious PDF — malware analysis report

Static analysis result for SHA-256 191b5ba413419379…

MALICIOUS

PDF

35.0 KB Created: 2021-06-25 19:35:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 7bec16e58ea5e71d2f3b58948bad2fdf SHA-1: d04562c5ca8cdc1dd85dd678d255c00d823ba0ad SHA-256: 191b5ba4134193797975414f5b8b78a6b067b88e233a898c3c856d92579c3394
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/hack-nuevo-para-roblox-game-hack In PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-robux-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/rbx-claim_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/freecoins_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-minecraft-com_GM479516143.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://adventureglaciertreks.com/userfiles/files/free-robux-no-human-verification-or-survey-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_off00003042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3042 22880 bytes
SHA-256: 1f2c25ccafcb4b237fde358a897cc161662afda09468b58f70b635a0bbd5a0b5
font_01_sfnt_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 19064 bytes
SHA-256: bd369f6a654770aa717dc418ef62e76f9a6e8cbf5d30341bdbe7accffc93d15d

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