Malicious PDF — malware analysis report

Static analysis result for SHA-256 a31655b522efc9e1…

MALICIOUS

PDF

14.6 KB Created: 2019-04-30 04:19:04 +01:00 Authoring application: mPDF 5.7
MD5: cf5fba36a11d4a0e8e1f74fb2a177656 SHA-1: 631fa45a5070f91b2acb60a3e1282ea30c47b58e SHA-256: a31655b522efc9e15c396c0919591f913c12de5ef34594c1c971940407c0f7c8
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various external websites, many of which are titled with book names, suggesting a potential SEO manipulation or content distribution scheme. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/2a03a09a03a02/The-Sandman-The-Dream-Hunters-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/4a09a03a00a06a03/The-Sandman-3-Dream-a-Little-Dream-of-Me-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/9a09a03a02a03a07/The-Sandman-Vidas-Breves-The-Sandman-7-Colecci-n-Vertigo-281-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/2a05a07a02a03a05/The-Sandman-Vol-01-Preludes-amp-Nocturnes-The-Sandman-1-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/5a02a03a03a09/The-Sandman-Vol-1-Preludes-amp-Nocturnes-The-Sandman-1-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/2a03a09a06a05/The-Sandman-Vol-2-The-Doll-s-House-The-Sandman-2-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/8a09a03a03a06a01/The-Sandman-n-m-1-Sandman-coleccionable-1-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/3a04a09a03a07/The-Kindly-Ones-The-Sandman-9-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/1a08a03a04a06a01/The-Quotable-Sandman-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/4a04a04a01a04a04/A-Game-of-You-The-Sandman-5-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/3a01a04a00a07a01/The-Sandman-Overture-6-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/1a08a03a04a07a05/The-Sandman-1-Sleep-of-the-Just-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/6a02a01a09a02/The-Sandman-Omnibus-Vol-1-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/2a03a09a00a02/The-Sandman-Endless-Nights-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/3a02a08a04a05a08/Fables-amp-Reflections-The-Sandman-6-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/3a03a08a02a01/The-Absolute-Sandman-Volume-One-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/3a00a09a05a00a01/Season-of-Mists-The-Sandman-4-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/3a05a03a08a08/Season-of-Mists-The-Sandman-4-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/4a09a03a00a05a09/The-Sandman-2-Imperfect-Hosts-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/3a00a04a00a03a06/Preludes-amp-Nocturnes-The-Sandman-1-by-Neil-Gaiman.pdf
    • http://muicuiu.dumb1.com/3a01a04a00a07a01/The-Sandman-Overture-

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