Malicious PDF — malware analysis report

Static analysis result for SHA-256 21fa31ad09656a56…

MALICIOUS

PDF

18.6 KB Created: 2019-04-30 04:58:02 +01:00 Authoring application: mPDF 5.7
MD5: 20d2596f66ecef37fbb1e9dc19587659 SHA-1: 23d61723b3c56a88fd719a3f39df393749b18cce SHA-256: 21fa31ad09656a5646e8c0b68ecd7fb0e7eee33ce9a32ec59ca84425d1710987
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 hosted on the domain 'muicuiu.dumb1.com'. This behavior is indicative of a link farm or a redirection scheme designed to lead users to potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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/9a08a00a00a09a00/Life-of-Danton-by-A-H-Augustus-Henry-1839-190-Beesly.pdf
    • http://muicuiu.dumb1.com/9a08a00a01a06a02/Danton-and-Other-Verse-by-Augustus-Henry-Beesly.pdf
    • http://muicuiu.dumb1.com/9a08a00a02a06a01/Danton-and-Other-Verse-by-A-H-Augustus-Henry-1839-190-Beesly.pdf
    • http://muicuiu.dumb1.com/9a08a00a02a05a01/Life-of-Danton-by-A-H-Beesly.pdf
    • http://muicuiu.dumb1.com/9a08a00a00a02a00/Riverrun-by-Danton-Remoto.pdf
    • http://muicuiu.dumb1.com/9a08a00a00a09a06/Highland-Brooch-by-Rebecca-Danton.pdf
    • http://muicuiu.dumb1.com/9a08a00a02a06a05/Mississippi-Nights-by-Pierre-Danton.pdf
    • http://muicuiu.dumb1.com/9a07a09a09a02a03/Savage-The-Awakening-of-Lizzie-Danton-by-L-A-Fiore.pdf
    • http://muicuiu.dumb1.com/9a08a00a01a05a09/Danton-Robespierre-and-Marat-by-Nicolas-Hentz.pdf
    • http://muicuiu.dumb1.com/8a03a06a06a04a03/Catalogue-of-Twenty-One-Masterpieces-Collected-by-the-Late-Mr-H-S-Henry-to-Be-Sold-at-Unrestricted-Public-Sale-by-Order-of-His-Executors-Mrs-Henry-and-Girard-Trust-Company-of-Philadelphia-on-February-4th-at-Mendelssohn-Hall-by-Harry-Samuel-Henry.pdf
    • http://muicuiu.dumb1.com/6a07a04a00a04a01/The-Life-Of-Goethe-by-George-Henry-Lewes.pdf
    • http://muicuiu.dumb1.com/6a09a09a07a09a03/Boundaries-When-to-Say-Yes-How-to-Say-No-to-Take-Control-of-Your-Life-by-Henry-Cloud.pdf
    • http://muicuiu.dumb1.com/6a01a08a04a09/Life-Without-Principle-by-Henry-David-Thoreau.pdf
    • http://muicuiu.dumb1.com/6a09a09a07a07/Boundaries-When-to-Say-Yes-How-to-Say-No-to-Take-Control-of-Your-Life-by-Henry-Cloud.pdf
    • http://muicuiu.dumb1.com/1a01a00a09a03a02a00/Augustine-of-Hippo-A-Life-by-Henry-Chadwick.pdf
    • http://muicuiu.dumb1.com/1a00a01a06a06a04a02/The-Life-of-Me-Enter-at-Your-Own-Risk-by-Henry-Winkler.pdf
    • http://muicuiu.dumb1.com/8a03a07a03a01a02/A-life-of-George-Westinghouse-by-Henry-Prout.pdf
    • http://muicuiu.dumb1.com/6a07a01a00/Admissions-Life-as-a-Brain-Surgeon-by-Henry-Marsh.pdf
    • http://muicuiu.dumb1.com/5a06a00a00a03a06/Walden-Or-Life-in-the-Woods-by-Henry-David-Thoreau.pdf
    • http://muicuiu.dumb1.com/3a07a00a04a04a05/An-Apology-for-the-Life-of-Mrs-Shamela-Andrews-by-Henry-Fielding.pdf

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