Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2264748b1ff70e…

MALICIOUS

PDF

44.6 KB Created: 2021-06-08 13:28:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 63d9ca4f9899ea813fb1b243bc93e6d2 SHA-1: 7a4391baf9e0afe47881be26cdac0c693f045044 SHA-256: af2264748b1ff70e0199a68cfad720d881d5e2ecaff08aa96139aac184c42e23
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/free-robux-offer-website-game-hack In PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/worst-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://battistibrothers.com/system/userfiles/files/coin-master-free-spin-and-coin_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_off000051a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A5 25784 bytes
SHA-256: 191a06186820a1ada6fece40fbaf4860c7a92579f56cc5fd88e43829a722c295
font_01_sfnt_off00008b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B47 18436 bytes
SHA-256: a9f1301b4dc5fb2ec8ae2576425c5d6c8bda5506b41a244cc2c72a29e20ffac0

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