Malicious PDF — malware analysis report

Static analysis result for SHA-256 793a03d5a799c906…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 05:45:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 908a7c815b72a5e540c0922a8d5bc1f4 SHA-1: 20a96b60a9b7d831caea17d7262c31f474967a86 SHA-256: 793a03d5a799c906155d868f5ef01739fb28ba28e6b223014cb7032fbfe7fcca
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.online/app/406889139/free-spins-for-coin-master-on-1-19-19-game-hack In PDF document text
    • http://lib.vipklh.ru/repository/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-spins-coin-master-unlimited_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_off000051b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B1 25372 bytes
SHA-256: 881f0f96d420c6f0a590747ed158d3168b4c614a6a41eb868fe6fcce12f0bd74
font_01_sfnt_off00008ca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA9 18156 bytes
SHA-256: b0a36ecb2e3994d8896217b2a143a3ffdf588c2d696638deb18a4d2fea054774

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