Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fc66a0235768fd0…

MALICIOUS

PDF

18.5 KB Created: 2019-05-03 05:26:04 +01:00 Authoring application: mPDF 5.7
MD5: 3221f8d00f80fb692fcbf3c0d6d82f51 SHA-1: 1b6f755b93acc2b072c7051c1b2b730f27737d2f SHA-256: 9fc66a0235768fd002bec216be7e4f8e3c8c8cee8ddde7586019b9847c2f2093
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF documents, suggesting a link farm or a method to distribute content through a large number of seemingly legitimate but ultimately malicious links. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/9a09a03a07a01a01/The-Complete-Works-of-Nathaniel-Hawthorne-Novels-Short-Stories-Poetry-Essays-Letters-and-Memoirs-Illustrated-Edition-The-Scarlet-Letter-with-its-Romance-Tanglewood-Tales-Birthmark-Ghost-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/2a02a07a05a05a02/The-Scarlet-Letter-and-Other-Writings-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/6a03a06a05a00a06/The-Scarlet-Letter-Study-Guide-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/1a01a01a01a00a05a00/The-Scarlet-Letter-and-Selected-Writings-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/6a04a03a00a06a03/The-Scarlet-Letter-and-the-Blithedale-Romance-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/5a07a06a08a09a07/The-Scarlet-Letter-An-Annotated-Text-Backgrounds-and-Sources-Essays-in-Criticism-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/8a04a04a08a07a05/The-Complete-Works-of-Nathaniel-Hawthorne-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/8a02a09a03a07a04/The-House-of-the-Seven-Gables-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/3a04a07a01a03/The-House-of-the-Seven-Gables-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/3a06a07a01a07a01/The-Marble-Faun-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/3a08a05a07a08a02/The-Blithedale-Romance-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/9a07a05a07a05/The-Artist-of-the-Beautiful-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/3a09a04a09a05a03/The-Blithedale-Romance-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/3a05a00a05a06a02/Mosses-from-an-Old-Manse-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/3a02a05a03a08a01/Tales-and-Sketches-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/5a08a06a09a04a06/La-Lettre-carlate-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/1a00a02a00a08a07a02/The-House-of-the-Seven-Gables-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/3a01a06a09a04a09/The-House-of-the-Seven-Gables-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/9a04a02a08a02/Young-Goodman-Brown-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/1a08a01a04a05a03/A-Wonder-Book-for-Girls-and-Boys-by-Nathaniel-Hawthorne.pdf
    • http://muicuiu.dumb1.com/8a04a04a08a07a05/The-Complete-Works-of-Nathaniel-Hawthorne-by-Nathaniel-

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