Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c17f4743c2b0e0…

MALICIOUS

PDF

16.0 KB Created: 2021-05-21 07:06:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fb471a463ee2f7e04712448b640048a6 SHA-1: 3159cd109ebcf6b095fc435778af6a0eddb68e77 SHA-256: 19c17f4743c2b0e0ba10d968749ad3c4ec22379f9ded8e3a47239728ddb59b85
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and text related to "Free Robux" and game hacks, designed to trick users into clicking. The primary malicious URL identified is https://netcdn.xyz/app/431946152/free-robux-com-no-verification-game-hack. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9254

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector high 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.xyz/app/431946152/free-robux-com-no-verification-game-hack PDF link annotation
    • https://ibelive.com.tw/image/data/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text

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