Malicious PDF — malware analysis report

Static analysis result for SHA-256 31c60dcdf86b2553…

MALICIOUS

PDF

186.0 KB Created: 2021-07-06 08:23:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0c59b05c9d043b0af8435d49ba124a2c SHA-1: 49b409221627b274b7457d2a6b9af734c19c3ce0 SHA-256: 31c60dcdf86b255388c15b5914f5ae8d354e8b7e3869a02f566546d15d2af7ad
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple links that redirect to a URL associated with malicious redirector infrastructure. The lure text suggests a scam related to game hacks, aiming to trick users into clicking the malicious link. The primary attack pattern observed is the use of a malicious link to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0062

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/1094591345/pokemon-go-free-or-not-game-hack In PDF document text