Malicious PDF — malware analysis report

Static analysis result for SHA-256 941444d8d960db56…

MALICIOUS

PDF

43.1 KB Created: 2021-05-13 01:21:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: eedeedd2ff96dc4e15f262f91a4f4311 SHA-1: 5f1c785698200e4795f5629caff631bd09ec96ba SHA-256: 941444d8d960db5651e690df37014fb15fa0677e5fd07e81388f6da85a9e7dba
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-free-spins-link-2021-twitter-game-hack In PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-source_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-mod-menu_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-daily-free-spins-link_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_003_off000049f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F7 26128 bytes
SHA-256: 102418bcf4f50db0255cce78cab8f59df3c5f6f699977d2fc374fe0917e51932
font_01_sfnt_off000084e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E1 18624 bytes
SHA-256: 2a222fa7736cc624854c57ea31ed5889d6e2ab16aa32c0d7c4a050f5b2ef3bb0