Malicious PDF — malware analysis report

Static analysis result for SHA-256 06befc3a2bf5ba96…

MALICIOUS

PDF

35.7 KB Created: 2021-05-30 09:34:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7e2c85d68f2cd5553bd3e3950ed21a33 SHA-1: aa8c084fad43b7ea68e098e4d02f82ea76c850c3 SHA-256: 06befc3a2bf5ba9699d2e0bdaedf0c25ffd4a64e180cc08fcf70a7ab597dc217
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it is a lure for a 'free generator / game hack' scam, directing users to a malicious URL. The document body text also explicitly mentions 'Free Robux Scam' and includes a call to action to access a 'ROBLOX GENERATOR'. While no scripts were extracted, the presence of malicious redirector links and the scam-like content strongly suggest a phishing or social engineering attack.

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/431946152/free-robux-scam-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_off00002d11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D11 25992 bytes
SHA-256: 734c1652e5f0ea05b96cfaa357d72e5816c744cee710c9e7d25ffe2bfeb4965f
font_01_sfnt_off00006a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A1B 18500 bytes
SHA-256: 24c52a02bd601b0a5cf869202747d5c16280e540771a7d3b3f68f33a5cbf68e3

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