Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8f4c0920ac987c…

MALICIOUS

PDF

33.8 KB Created: 2021-05-20 22:08:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: ea7df54c1e78f4083fa3a06f49f312a6 SHA-1: 872e84455037382632a2e6f0d43c3cc237750ce0 SHA-256: aa8f4c0920ac987cacfc3d3798f43bc936f7117917fe1ff2f6e93d42f141c41d
130 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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 https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-on-pc-game-hack In 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_off00002baa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2BAA 25040 bytes
SHA-256: 3e7f3dbf6a5721e9a0766bc9424363a17ebc1375c27b6e5ff03c400157cd88e6
font_01_sfnt_off000063d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D6 18028 bytes
SHA-256: b9422edf84f92072c73e95211b34a92c0a0e69f845a714fee2d613fe1b4264b0