Malicious PDF — malware analysis report

Static analysis result for SHA-256 793378d2f82da1e4…

MALICIOUS

PDF

35.7 KB Created: 2021-06-18 00:01:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-15
MD5: b657a32e7cf15365641eb16f72ee7ffa SHA-1: 8d7d398248e0cfbd7e850428ace5aaab03ed718e SHA-256: 793378d2f82da1e4ed111d593a8736a347df1c0515079b37119b56eec6e9e066
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-roblox-injecter-v3rmillipn-game-hack In PDF document text
    • https://lib.insan-unggul.ac.id/repository/field-of-battle-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/boing-arroe-free-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-twisted-murderer-mvp-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/guuudinfo-robux-hacks_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-tiktok-likes-and-fans_GM835599320.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-sprinting-simulator-2-hack_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/how-to-hack-all-the-games-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/free-roblox-full-lua_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/robux-rbx-calc-free_GM431946152.pdfIn PDF document text
    • https://lib.insan-unggul.ac.id/repository/roblox-cheat-no-key-required_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
font_00_sfnt_off000031da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DA 22696 bytes
SHA-256: 58fe8c8fc80a7ef525cf1caf86361496a3a06b41fb065850ebc7a167237aa25a
font_01_sfnt_off000064c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C1 19620 bytes
SHA-256: 947b73d0fab760890b10cf3def98f694da81d003813e1b9f3449fc8ee3822abc

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