Malicious PDF — malware analysis report

Static analysis result for SHA-256 96231f2d71f20d0b…

MALICIOUS

PDF

36.6 KB Created: 2021-05-11 17:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 91a8cfa3a9601c38b053c5943c6ec0a7 SHA-1: e1c46645bf833c0b5838cb74d34ae4b1d41a9a01 SHA-256: 96231f2d71f20d0bdc485c6dc2a1b72f111ca7295a7e6a33639d607fe383bc52
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a "free generator / game hack" which redirects to known malicious infrastructure. The document body and embedded artifacts suggest a lure for Roblox-related cheats or items, a common social engineering tactic. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

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/431946152/free-accessories-roblox-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_003_off00003320.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3320 25516 bytes
SHA-256: cad08aac8e82aad1f7f4bc9680a02c95588f49cd82e359df383086fe9f7ed35f
font_01_sfnt_off00006eaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAF 18068 bytes
SHA-256: 1bea2de0f546621612e5e0cbd01172ecf5f1ab9f5485e5c32d3a5168ac155f59

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