Malicious PDF — malware analysis report

Static analysis result for SHA-256 94199a59cab73ad9…

MALICIOUS

PDF

42.1 KB Created: 2021-05-15 02:24:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-12
MD5: c199dfb49808224ce0e1f9ed7a48b033 SHA-1: 1b5d7bbcf9af89ca9abaf0d887ef3b707dd8a89e SHA-256: 94199a59cab73ad9965bd3ae0eae0ff656c56485c45980956a36460aa054d01e
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-hack-link-game-hack In PDF document text
    • http://www.gox.pt/images/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://www.gox.pt/images/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://www.gox.pt/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.gox.pt/images/free-coins-and-spins-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gox.pt/images/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://www.gox.pt/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.gox.pt/images/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://www.gox.pt/images/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.gox.pt/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.gox.pt/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/free-robux-download_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.gox.pt/images/roblox-free-models_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
stream_003_off0000488d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488D 25708 bytes
SHA-256: 26d989c68b67f9679866ca8c4f22a383bda4f2c464732519e5e2b3d0444cddf3
font_01_sfnt_off00008323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8323 18056 bytes
SHA-256: 5bc30252b20e252a4e4f12754ee6fd7a8bdc905346c0352a18cf9aa56584dd16

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