Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7184edb8dae4968…

MALICIOUS

PDF

38.6 KB Created: 2021-05-14 19:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 928afee7ffcc856be6b82283000e64dd SHA-1: c11ae01623af42bfc5a0561edc3739b2d7b075b6 SHA-256: e7184edb8dae4968d0eb8d9dd96c8d852ff63bb6b5da96bcbe88b4e30cfb98b9
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that promote a 'free generator / game hack' to lure users. One of the primary links directs to known malicious redirector infrastructure. The document body also contains a call-to-action button phrase, reinforcing the deceptive nature of the lure. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious redirector designed to lead users to potentially harmful content or downloads.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-roblox-hack-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_off000031fd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31FD 30160 bytes
SHA-256: 87e4c196623b7819781ba2c9477fa3c435770ac02ca11a42a608a74031fcbe3e
font_01_sfnt_off000075b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B6 18344 bytes
SHA-256: 9d921b2eee93f33e2efc5c53c848117e08d630d06cf868d7193b51dd4894dd93

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