Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0450be47f6a0f65…

MALICIOUS

PDF

16.4 KB Created: 2019-04-29 23:10:15 +01:00 Authoring application: mPDF 5.7
MD5: dc099a7482bbaa0c097d49d66a5ab748 SHA-1: ff8c9e38e90ed190f2659368a4e01ab3cd58ad6c SHA-256: d0450be47f6a0f65c4d4530efe0fad86157cda429694d10a17acafaae747406e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a link farm or traffic generation scheme. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample. The primary attack pattern involves directing users to a large number of external PDF documents hosted on the `muicuiu.dumb1.com` domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/3a03a09a02a01a01/The-Marriage-Game-A-Novel-of-Queen-Elizabeth-I-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/4a08a08a05a09a01/Mary-Queen-of-Scots-and-the-Murder-of-Lord-Darnley-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/2a01a03a05a01a05/Queen-Isabella-Treachery-Adultery-and-Murder-in-Medieval-England-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/8a06a06a03a00/The-Princes-in-the-Tower-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/5a00a00a02a01a05/Innocent-Traitor-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/3a03a01a06a05a01/The-Life-of-Elizabeth-I-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/2a06a02a00a09a01/The-Marriage-Game-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/1a00a03a07a08a01/A-Dangerous-Inheritance-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/3a06a03a00a01/Innocent-Traitor-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/1a00a04a03a08a06/The-Princes-in-the-Tower-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/3a00a05a02a02a06/The-Lady-Elizabeth-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/3a02a09a00a04a06/The-Six-Wives-Of-Henry-VIII-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/1a09a03a00a03a07/Eleanor-of-Aquitaine-A-Life-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/8a08a01a06a06/Henry-VIII-The-King-and-His-Court-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/1a00a07a03a00a06/Innocent-Traitor-A-Novel-of-Lady-Jane-Grey-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/1a07a09a08a00a09/A-Dangerous-Inheritance-A-Novel-of-Tudor-Rivals-and-the-Secret-of-the-Tower-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/3a07a05a09a08a01/Against-Our-Better-Judgment-The-Hidden-History-of-How-the-United-States-Was-Used-to-Create-Israel-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/8a08a07a00a04a05/The-Ring-and-the-Crown-A-History-of-Royal-Weddings-1066-2011-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/3a09a05a00a00a02/Queens-of-the-Conquest-England-s-Medieval-Queens-1-by-Alison-Weir.pdf
    • http://muicuiu.dumb1.com/1a05a03a04a07a00/The-Queen-s-Captive-Thornleigh-3-by-Barbara-Kyle.pdf

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