Malicious PDF — malware analysis report

Static analysis result for SHA-256 81496015e6112f66…

MALICIOUS

PDF

113.8 KB Created: 2021-07-06 07:12:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 9d6bd766544aa9c26047eb51b17c84fc SHA-1: 4956adec6e503cf43475f26c9ebb91fd01e4a437 SHA-256: 81496015e6112f66026801ed3764b1dce0a5c09f9f5b1bd4a7ffe11dcae044be
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link that redirects to a malicious URL, masquerading as a game hack generator. This is a common social engineering tactic to trick users into visiting potentially harmful sites. The heuristic firings confirm the presence of a malicious redirector and a lure related to game hacks.

Machine Learning

  • Nyx PDF Classifier clean score 0.0126

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/1330123889/pubg-uc-earning-app-2021-game-hack In PDF document text