Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e20d4e21566557…

MALICIOUS

PDF

1.1 KB Created: 2021-07-04 13:14:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: fcc0466eb8e9cc59580c9ced7e9f8c06 SHA-1: 85be5339544d3027f9e9eb25f354a43051e49a5e SHA-256: 89e20d4e21566557ba03e3d67eae14badf188d720a6b2341034c6e13cd79ce37
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that redirect to a URL promoting a 'game hack' for Robux. This lure is associated with malicious redirector infrastructure, indicating a phishing or malware distribution attempt. No scripts were extracted, but the presence of embedded URLs and the nature of the lure suggest an attempt to trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 3

  • 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.
  • 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/431946152/how-to-get-more-robux-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-robux-today_GM431946152.pdfIn PDF document text

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