Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8c072c1dff6725…

MALICIOUS

PDF

42.7 KB Created: 2021-04-26 21:23:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 5b113c488a8de8897cf6e9e2b6d45e6a SHA-1: f82da8e0ee5a103f327960353f02fcc7db2912e5 SHA-256: aa8c072c1dff67250e8f6fc9305794b41def0e08f84bf71577bb37c222e7fae4
200 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/roblox-wanted-hack-pastebin-game-hack In PDF document text
    • http://digilib.ivet.ac.id/repository/como-conseguir-robux-gratis-2021-sin-hacks.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/chrome-web-store-roblox-hacks.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/roblox-hack-2021-cheat-engine-2021.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/cute-free-hairs-for-girls-in-roblox.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/free-rixty-codes-for-robux.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/purchase-iteam-free-pastebin-roblox.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/bonus-free-day-roblox.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/does-the-roblox-hack-work.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/how-to-get-free-robux-no-survey-no-human-verification.pdfIn PDF document text
    • http://digilib.ivet.ac.id/repository/can-you-really-get-robux-for-free.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_003_off00004487.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4487 27300 bytes
SHA-256: 4180ade7791c44e70ac086bfaf2dca2a6034a1acf2d02817e3b88ba762c4cab6
font_01_sfnt_off00008364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8364 18932 bytes
SHA-256: 47324650157f982c7562a09f1359b87116e2fb539b3bb566e3c26d0364ba418d

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