Malicious PDF — malware analysis report

Static analysis result for SHA-256 445955abcb5861dd…

MALICIOUS

PDF

32.9 KB Created: 2021-06-28 12:17:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-11
MD5: 1fa0b7a209fd271562763e83f8ff206a SHA-1: c777eab44b257139ff7ea34323ac42d7f0639c35 SHA-256: 445955abcb5861ddb4a8466d051019a3c01f71c3d45d71a88ca767a4a5f7d7da
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/how-to-be-an-oreo-for-free-on-roblox-game-hack In PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/tiktok-free-boost_GM835599320.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-hack-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/hackear-roblox-apk_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-hack-roblox-accounts-real_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-roblox-hair-boy_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/roblox-cheat-engine-70-bypass-2021_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-the-diamond-block-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/robux-games_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/roblox-free-item-codes_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_off00002b56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B56 22156 bytes
SHA-256: 7ca2f9d647d2da7ab0ff917456072e5e6df94cbb6a8990e5ca4f43e8f9af0dac
font_01_sfnt_off00005c76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C76 18812 bytes
SHA-256: 74e2be6616bcb3fdec0d7a1412451d31ebc58deb8fe00c4253cf01f0f0215636

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