Malicious PDF — malware analysis report

Static analysis result for SHA-256 66188869fe8f5c1a…

MALICIOUS

PDF

111.6 KB Created: 2021-07-03 14:09:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 99a14e8fbc39bca088f70056dceb1e76 SHA-1: 7341a67eb4cc939af2a3c1b82e8778e983f746a2 SHA-256: 66188869fe8f5c1a4572394b15899e8639c9266d44ff63052c3dcb1c1a74a36d
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains embedded links that are identified as malicious redirectors, specifically luring users with a 'Pokemon Go Update Free Download' theme. These links lead to the URL http://netcdn.tw/app/1094591345/pokemon-go-update-free-download-game-hack, which is associated with known malicious infrastructure. The primary attack vector appears to be social engineering via a deceptive attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0131

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-update-free-download-game-hack In PDF document text

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