Malicious PDF — malware analysis report

Static analysis result for SHA-256 18da7179890fb9d5…

MALICIOUS

PDF

183.8 KB Created: 2021-07-04 11:52:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b10450de68149d877be1ba59f89dc0cc SHA-1: 1f8d4aa7432a37add93979ce1c66f2e976de2c2c SHA-256: 18da7179890fb9d5437bc78b7cc48b95b0a74badce0cd382f5f866c66d7041f0
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 targeting users with a lure related to game hacks and in-game currency. The primary URL directs to a known malicious domain, indicating a phishing or scam attempt. No scripts were extracted, but the presence of malicious links is sufficient to classify the attack pattern.

Machine Learning

  • Nyx PDF Classifier clean score 0.0067

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-recharge-game-hack In PDF document text

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