Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa80863595d9564a…

MALICIOUS

PDF

36.4 KB Created: 2021-07-09 06:13:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 8bf3acc7f9b027c6f452772533c50913 SHA-1: adddf7940c809310369255398c91985e98ce9664 SHA-256: aa80863595d9564af75751c3f0bb5b91a26ceac74184d1fa194e52dd18dfe1f8
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.tw/app/406889139/coin-master-daily-free-spins-link-today-2021-game-hack In PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/coin-master-fan-page-facebook_GM406889139.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/redline-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/hacks-como-conseguir-robux-gratis_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/lego-hack-download-roblox_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/how-to-get-anything-for-free-on-roblox-2021-inspect_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-robux-here_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/i-want-to-break-free-roblox-version_GM431946152.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://khavarrooy.com/assets/uploads/pages/files/minecraft-pe-017-0-apk-free-download-android_GM479516143.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_002_off00003497.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3497 22972 bytes
SHA-256: 750f8426b9306883df12b81debe34ea2ac6576693a53bf7f1dc4e0a942fd6f9e
font_01_sfnt_off00006837.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6837 19344 bytes
SHA-256: bda18ad7bc028b2989dfdc10c84b9c87c1dbf0242a88a3a6fbf9217f203e509c