Malicious PDF — malware analysis report

Static analysis result for SHA-256 d309dacdd17f1cc2…

MALICIOUS

PDF

144.5 KB Created: 2021-07-06 07:25:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 523adcdcf93c144e3c30ccf20a04dc28 SHA-1: 146f17ba6ca4207bb85b62353c17bd6a26aeab67 SHA-256: d309dacdd17f1cc247ccb52ae6ad10b959b93a0a7c3fb9c08ed0538b4a227e55
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple links that redirect to a known malicious infrastructure hosting a 'game hack' lure. This suggests the document is designed to trick users into visiting a compromised site, likely to download further malware or engage in phishing. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0080

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-4all-cool-20219-uc-game-hack In PDF document text