Malicious PDF — malware analysis report

Static analysis result for SHA-256 b40c3ec10c10b6f8…

MALICIOUS

PDF

15.3 KB Created: 2019-04-30 02:06:49 +01:00 Authoring application: mPDF 5.7
MD5: ca13623afb1c3a76bbfbe25aabf2d8cb SHA-1: c5652e6b0a1c9f61345eff870b939f4a21a57cd7 SHA-256: b40c3ec10c10b6f8ee27868f48eb24abf5cd121ee949e88e7a4a249271767382
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO spam or to distribute further malicious content. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm. No scripts were extracted, limiting the ability to determine a specific payload delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/3a07a06a01a04a04/Invisible-Ivy-Malone-Mysteries-1-by-Lorena-McCourtney.pdf
    • http://muicuiu.dumb1.com/1a02a05a09a01/Forgotten-by-Lorena-McCourtney.pdf
    • http://muicuiu.dumb1.com/5a02a07a05a01a02/Stranded-Ivy-Malone-Mysteries-4-by-Lorena-McCourtney.pdf
    • http://muicuiu.dumb1.com/5a02a07a06a04a04/Riptide-The-Julesburg-Mysteries-2-by-Lorena-McCourtney.pdf
    • http://muicuiu.dumb1.com/5a02a07a06a04a09/Something-Buried-Something-Blue-The-Mac-n-Ivy-Mysteries-Book-1-by-Lorena-McCourtney.pdf
    • http://muicuiu.dumb1.com/5a02a07a05a04a06/Dolled-Up-to-Die-The-Cate-Kincaid-Files-2-by-Lorena-McCourtney.pdf
    • http://muicuiu.dumb1.com/5a02a07a05a00a04/Dying-to-Read-The-Cate-Kinkaid-Files-1-by-Lorena-McCourtney.pdf
    • http://muicuiu.dumb1.com/4a01a00a06a05a05/Beauty-A-novella-of-The-Invisible-The-Invisible-Episode-Book-1-by-Janean-Worth.pdf
    • http://muicuiu.dumb1.com/1a01a07a07a03a06a04/Virtuosity-in-Business-Invisible-Law-Guiding-the-Invisible-Hand-by-Kevin-T-Jackson.pdf
    • http://muicuiu.dumb1.com/1a02/The-Invisible-Library-The-Invisible-Library-1-by-Genevieve-Cogman.pdf
    • http://muicuiu.dumb1.com/3a05a00a00/The-Invisible-Library-The-Invisible-Library-1-by-Genevieve-Cogman.pdf
    • http://muicuiu.dumb1.com/5a02a07a06a04a03/The-X-by-Lorena-Bathey.pdf
    • http://muicuiu.dumb1.com/5a02a07a05a00a00/Lorena-by-Frank-G-Slaughter.pdf
    • http://muicuiu.dumb1.com/5a02a07a07a02a05/Lorena-by-Eileen-Townsend.pdf
    • http://muicuiu.dumb1.com/5a02a07a05a05a02/Lorena-by-Jackson-Bailey.pdf
    • http://muicuiu.dumb1.com/5a02a07a07a02a03/Lorena-by-Dennison-Ambrose.pdf
    • http://muicuiu.dumb1.com/5a02a07a07a02a06/Lorena-by-Joseph-Philbrick-Webster.pdf
    • http://muicuiu.dumb1.com/5a02a09a08/Nightlights-by-Lorena-Alvarez-Gomez.pdf
    • http://muicuiu.dumb1.com/5a02a07a06a05a04/La-vida-que-no-eleg-by-Lorena-Franco.pdf
    • http://muicuiu.dumb1.com/6a03a04a01a04a05/For-the-Love-of-Anny-by-Lorena-Lovelock.pdf

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