Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7fbe866b753beb…

MALICIOUS

PDF

14.5 KB Created: 2019-05-03 05:54:03 +01:00 Authoring application: mPDF 5.7
MD5: 5ecdd8f701b7c9879c08c733b9fde101 SHA-1: 696bcc7c85c0e77f1cad91836fdf2f29ea7dbc36 SHA-256: 4e7fbe866b753beb87a5e903c00a2da38d715d183ecd328c2aaeb516ce275b4e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. While the specific intent of the linked PDFs is unclear, the sheer volume and the suspicious domain suggest a malicious campaign aimed at driving traffic or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/1a01a07a09a09a01a07/A-Very-Beary-Christmas-by-Abbie-Zanders.pdf
    • http://muicuiu.dumb1.com/7a07a08a07a04a04/Michael-The-Connelly-Cousins-3-by-Abbie-Zanders.pdf
    • http://muicuiu.dumb1.com/6a05a09a06a02a01/Faerie-Godmother-Mythic-1-by-Abbie-Zanders.pdf
    • http://muicuiu.dumb1.com/1a01a07a09a08a04a01/All-Night-Woman-Covendale-2-by-Abbie-Zanders.pdf
    • http://muicuiu.dumb1.com/1a08a04a09a02a09/Dangerous-Secrets-Callaghan-Brothers-1-by-Abbie-Zanders.pdf
    • http://muicuiu.dumb1.com/1a01a07a09a08a03a08/Forever-Mine-Callaghan-Brothers-9-by-Abbie-Zanders.pdf
    • http://muicuiu.dumb1.com/1a01a07a09a08a00a03/Bottom-Line-Callaghan-Brothers-8-by-Abbie-Zanders.pdf
    • http://muicuiu.dumb1.com/1a07a03a06a08a04/Wicked-Werewolf-Secret-Werewolf-Society-2-by-Lisa-Renee-Jones.pdf
    • http://muicuiu.dumb1.com/1a07a03a06a09a00/Wicked-Werewolf-Night-Werewolf-Society-1-by-Lisa-Renee-Jones.pdf
    • http://muicuiu.dumb1.com/1a04a05a08a03a09/Pretty-Little-Werewolf-Little-Werewolf-1-by-Katie-Salidas.pdf
    • http://muicuiu.dumb1.com/3a00a03a02a07a00/Never-Cry-Werewolf-Never-Cry-Werewolf-1-by-Heather-Davis.pdf
    • http://muicuiu.dumb1.com/6a08a08a01a02/Never-Cry-Werewolf-Never-Cry-Werewolf-1-by-Heather-Davis.pdf
    • http://muicuiu.dumb1.com/3a09a03a09a01a00/The-Falling-of-Grace-Falling-2-by-Marisa-Oldham.pdf
    • http://muicuiu.dumb1.com/1a04a06a09a05a06/Falling-for-the-Enemy-Falling-in-Love-1-by-Sam-Crescent.pdf
    • http://muicuiu.dumb1.com/1a04a08a06a03a01/How-to-Run-with-a-Naked-Werewolf-Naked-Werewolf-3-by-Molly-Harper.pdf
    • http://muicuiu.dumb1.com/8a00a09a04a04/How-to-Run-with-a-Naked-Werewolf-Naked-Werewolf-3-by-Molly-Harper.pdf
    • http://muicuiu.dumb1.com/1a02a03a08a01a06/Falling-Away-Falling-2-by-Devon-Ashley.pdf
    • http://muicuiu.dumb1.com/1a02a07a06a05a04/Falling-in-Between-Falling-1-by-Devon-Ashley.pdf
    • http://muicuiu.dumb1.com/3a00a00a09a04a02/Falling-For-You-Falling-For-Him-1-by-Kelly-Washington.pdf
    • http://muicuiu.dumb1.com/4a04a08a02a04/This-is-Falling-Falling-1-by-Ginger-Scott.pdf
    • http://muicuiu.dumb1.com/1a04a05a08a03a09/Pretty-Little-W

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