Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87a09fd98e8b185…

MALICIOUS

PDF

33.8 KB Created: 2021-06-19 09:58:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-17
MD5: 3a43407c16cd6d008d62429b7f0be9db SHA-1: f04c2c1e8690d23fc99cf33686d9db721ebb3705 SHA-256: f87a09fd98e8b1855832d8addcf8d17d2734a65aa9e477b66565472216392b52
160 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-accounts-with-robux-2021-march-game-hack In PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/https-hack-de-robux-roblox-robux_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/how-to-get-free-robux-using-roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/how-to-hack-someone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/roblox-666-hack-download_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/wierd-roblox-items-for-free_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/robux-no-verification_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://e-learning-mts-nurussaadah.com/__statics/gudangsoal/files/roblox-free-items-event_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_off00002bf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF0 21908 bytes
SHA-256: 40ec63b06c7856a35bdb459b3a7b7e8cd761cc9db09388df26dec459ca7d5b51
font_01_sfnt_off00005c9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9E 19976 bytes
SHA-256: 51ed9d4e4cf2b005f8ce93663c2388fc16da3470ad8feabeb05e199e982a796e

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