Malicious PDF — malware analysis report

Static analysis result for SHA-256 f185cb844bee9993…

MALICIOUS

PDF

88.6 KB Created: 2021-07-06 02:12:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f694260cbf2d0ee35e165125bd3b281d SHA-1: bed19cff1a96190c093a917dbcfba4b8dac1cb7c SHA-256: f185cb844bee9993644878d179a55b0290e0893b00ca8295fc7d272800ee426f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that point to a known malicious redirector, disguised as a lure for game hacks. The heuristic firings indicate that the document is designed to redirect users to potentially harmful infrastructure. No scripts were extracted from this sample, but the presence of malicious links is sufficient to infer an attack pattern.

Machine Learning

  • Nyx PDF Classifier clean score 0.0141

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-qiymtlri-game-hack In PDF document text