Malicious PDF — malware analysis report

Static analysis result for SHA-256 793f9a8f8859e805…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 01:03:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: e2979e682e83e296f0471efc6875c193 SHA-1: 0ca01bd308a922ec610aff042d08243a376064f4 SHA-256: 793f9a8f8859e805b59ca51ed2594b31fdd609bea1c89b8ee920ebe548a9ea72
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/431946152/how-to-get-free-robux-fast-and-easy-game-hack In PDF document text
    • http://lib.stiesultanagung.ac.id//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id//repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.stiesultanagung.ac.id/repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://krnl.rocksIn 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_off0000498b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x498B 25352 bytes
SHA-256: e0e84ad099c64e584d4f22f8c91ec271b982480c55d5c66fe8f9588c1c22a29a
font_01_sfnt_off000082be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BE 18864 bytes
SHA-256: 264ac3d9ee16189788a918c90b00fec891485e046f110455159a23ab28eb8c09

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