Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4c4105a73a1c7f…

MALICIOUS

PDF

24.8 KB Created: 2021-05-17 17:11:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df6d3448027083cf82b1a1b626ccac98 SHA-1: 37bb6d4469c7f5c185dc5b5f4af4bbf150f3383b SHA-256: 9d4c4105a73a1c7fb7ba966d6053ced9f360db744a65225aa1c2eac02ef39480
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, specifically targeting users with lures for game hacks and free generators. The document body, though heavily obfuscated, contains references to these lures and embedded URLs. The primary function appears to be redirecting users to potentially malicious websites.

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/479516143/try-minecraft-free-game-hack In PDF document text
    • http://butkimloai.com/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/freerubux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://butkimloai.com/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://butkimloai.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text