Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3166e7f68c3d62…

MALICIOUS

PDF

30.0 KB Created: 2021-07-19 11:40:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-14
MD5: 78726f82de23cbd1a5cc153e426d2bad SHA-1: 76e8d68961396ffb83578c2f73a6d6b2fe199410 SHA-256: 0d3166e7f68c3d62ec58deb23f83034b17b3f113de200916bd96915767e89f8b
130 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0573

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/479516143/how-to-setup-a-minecraft-server-for-free-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
font_00_sfnt_off000020fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20FC 22752 bytes
SHA-256: a9a8185ce1230642376f5ca117f30abdfdfb8d41f612000fbfdc9d9cbb0a5137
font_01_sfnt_off000053dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53DD 18304 bytes
SHA-256: b0360e651ad81bf5acbb1fd73200378f36351cb2aebcef0077014d987ef32c64