Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4093809216f0173…

MALICIOUS

PDF

12.9 KB Created: 2019-04-30 04:58:26 +01:00 Authoring application: mPDF 5.7
MD5: 78560c10fafa84375363e5d1f26298d2 SHA-1: 8db3067a00a3a06ae578ae982c9a583f9d8b4ff5 SHA-256: b4093809216f0173318c13c1c3c1994c912065531e6b2370211435841798519e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which are structured as book titles, suggesting a link farm or redirection scheme. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves directing users to external content, likely to host further malicious payloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8891

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://muicuiu.dumb1.com/8a01a01a02a02a04/Bad-Girls-by-Wilson-Jacqueline-2006-Paperback-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/5a07a05a08a09a00/The-World-of-Jacqueline-Wilson-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/6a08a08a02a03/Midnight-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/7a08a03a09a05/Bad-Girls-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/7a02a00a00a08/Cookie-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/2a06a01a08a06a04/Falling-Apart-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/1a06a08a06a09a05/Lily-Alone-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/8a01a04a09a05/Little-Darlings-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/4a09a08a06a00a08/The-Suitcase-Kid-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/4a02a05a01a06a04/The-Werepuppy-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/7a00a09a06a07/Best-Friends-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/6a09a01a00a05/Queenie-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/7a09a07a05a03a07/D-t-do-kufru-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/7a01a09a05a04/Lola-Rose-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/9a08a07a05a07a03/My-Brother-Bernadette-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/2a06a06a06a06a01/Girls-Out-Late-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/4a07a09a05a02/Love-Lessons-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/5a09a08a09a04/Paws-and-Whiskers-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/3a08a02a05a00a08/Vicky-Angel-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/4a06a03a01a03a04/Lola-Rose-by-Jacqueline-Wilson.pdf
    • http://muicuiu.dumb1.com/9a08

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