Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4d231e72803740d…

MALICIOUS

PDF

15.2 KB Created: 2019-04-30 03:49:31 +01:00 Authoring application: mPDF 5.7
MD5: 576767be3df3a201fcff1ca13b9a0de0 SHA-1: c56a878c0d397c9566e3f098568181a3df99079b SHA-256: e4d231e72803740dd90851218f1eacfe8e2c777baf56a3b04990e4b8da7e3fe5
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various book titles. While the individual links are classified as benign, the sheer volume and the nature of the heuristic suggest a link farm or a similar deceptive tactic to drive traffic. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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/2a06a01a08a05/The-Year-s-Best-Fantasy-and-Horror-Thirteenth-Annual-Collection-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/5a03a05a03a00a04/The-Year-s-Best-Fantasy-and-Horror-Eleventh-Annual-Collection-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/5a03a05a03a00a07/Demons-and-Dreams-Year-s-Best-Fantasy-and-Horror-Volume-2-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/3a00a07a07a06a08/The-Best-Horror-of-the-Year-Volume-Four-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/5a00a08a00a04a06/The-Best-Horror-of-the-Year-Volume-Five-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/2a02a01a06a08a01/Naked-City-Tales-of-Urban-Fantasy-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/2a06a06a02a04/The-Year-s-Best-Science-Fiction-First-Annual-Collection-by-Gardner-Dozois.pdf
    • http://muicuiu.dumb1.com/2a06a05a06a01/The-Year-s-Best-Science-Fiction-Fourteenth-Annual-Collection-by-Gardner-Dozois.pdf
    • http://muicuiu.dumb1.com/2a06a05a02a05/The-Year-s-Best-Science-Fiction-Twenty-First-Annual-Collection-by-Gardner-Dozois.pdf
    • http://muicuiu.dumb1.com/2a06a06a08a06/The-Year-s-Best-Science-Fiction-Twenty-Ninth-Annual-Collection-by-Gardner-Dozois.pdf
    • http://muicuiu.dumb1.com/3a03a07a07a05a00/The-Year-s-Best-Science-Fiction-Twenty-Fourth-Annual-Collection-by-Gardner-Dozois.pdf
    • http://muicuiu.dumb1.com/3a08a05a09a06/Supernatural-Noir-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/2a06a03a00a08/Whisper-Of-Blood-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/5a03a05a01a08a02/The-Dark-of-the-Woods-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/2a04a08a09a07a07/Lovecraft-s-Monsters-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/7a07a06a04a00a00/Some-of-the-Best-From-Tor-com-2013-Edition-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/3a08a08a00a00/Lovecraft-Unbound-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/2a06a00a06a05/Haunted-Legends-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/4a08a06a01a08a07/Mad-Hatters-and-March-Hares-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/3a09a08a05a09a08/Black-Heart-Ivory-Bones-by-Ellen-Datlow.pdf
    • http://muicuiu.dumb1.com/3a03a07a07a05a00/The-Year-s-Best-Science-Fiction-Twenty-Fourth-Annual-Collection-by-Gardner-D

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