Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f232239a9c00cc6…

MALICIOUS

PDF

23.0 KB Created: 2021-05-20 01:37:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 30175c50a3daae3aa9039fc3065efa4e SHA-1: e8acfb98e1e138c2d684e130358f2d105513b1a4 SHA-256: 4f232239a9c00cc6088bf61400534fc45b5fa95cf23527a5997b81fb3f90bb71
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users to websites offering game hacks and free item generators, which are common pretexts for phishing or malware distribution. The primary malicious link identified is https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coins-links-game-hack. While no scripts were directly extracted, the PDF structure itself contains embedded URLs that are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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 https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coins-links-game-hack In PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/why-is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/free-coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/mcpe-optifine_GM479516143.pdfIn PDF document text
    • http://www.6636.com.tw/ad6636/upload/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text

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