Malicious PDF — malware analysis report

Static analysis result for SHA-256 c140ec09fa41099c…

MALICIOUS

PDF

140.6 KB Created: 2021-07-05 11:52:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b0cce9a7367b250f204378c73fc31a40 SHA-1: 0cb1c9f84465010b7f4cfddf995f6d49bde2a889 SHA-256: c140ec09fa41099c3ba375d6c10069db7dd487bc7233916282f236e85eb56167
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it links to a malicious redirector disguised as a 'free generator / game hack'. The embedded URL, http://netcdn.tw/app/1094591345/get-coins-pokemon-go-free-game-hack, is associated with known malicious infrastructure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lure users to a malicious site, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.0078

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/get-coins-pokemon-go-free-game-hack In PDF document text