Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0ce884bcdd1ba1…

MALICIOUS

PDF

35.6 KB Created: 2021-04-06 18:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7fa7103b55b0b20912ee24763acf13c6 SHA-1: 7c792e1ed5419092c897802f1e365b714910c3be SHA-256: eb0ce884bcdd1ba1af3fd042ab0a7c114d61cd779d4a20aed69785dc3d25e2b5
72 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a 'free generator / game hack' lure, directing users to a specific URL. This URL is likely intended to lead to a malicious site or download. While no scripts were extracted, the PDF structure and embedded URI strongly suggest a social engineering tactic to trick users into visiting a potentially harmful resource.

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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://enigmagenerator.com/app/431946152/roblox-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fe9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FE9 26944 bytes
SHA-256: f82e539222c40449a9230e67fd2c2b8d1e612d656989109f6b2f8ec0769c7e63
font_01_sfnt_off00006ceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEB 17424 bytes
SHA-256: 5dabf67043ed9393340f3f9382096f69e6f0e7828ce7aaf89cd244a749d8f9c4

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