Malicious PDF — malware analysis report

Static analysis result for SHA-256 f194e100caa58886…

MALICIOUS

PDF

17.2 KB Created: 2019-04-30 04:17:53 +01:00 Authoring application: mPDF 5.7
MD5: 05adce3b14c253f3655d58604149c421 SHA-1: 1617908c8f7bddc2f189cececa9b14f04640ca6d SHA-256: f194e100caa58886d7eac34f2329f2998fe5f1be003e2d66018d2c8c8ba2691e
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. While the specific URLs themselves are marked as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or as a lure for further malicious activity. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/1a08a02a07a02a09/Edith-Wharton-A-Collection-of-Critical-Essays-by-Irving-Howe.pdf
    • http://muicuiu.dumb1.com/9a08a05a03a00a04/The-House-of-Mirth-by-Edith-Wharton---Delphi-Classics-Illustrated-Delphi-Parts-Edition-Edith-Wharton-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/9a01a05a09a05a02/The-Age-of-Innocence-The-Collected-Works-of-Edith-Wharton---43-Volumes-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/4a02a03a06a04a00/The-New-York-Stories-of-Edith-Wharton-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/4a04a02a09a03a01/The-Ghost-Stories-of-Edith-Wharton-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/7a04a08a03a04a08/Edith-Wharton-Selected-Poems-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/6a01a05a01a00a07/Ionesco-A-Collection-of-Critical-Essays-by-Rosette-C-Lamont.pdf
    • http://muicuiu.dumb1.com/6a06a09a06a08a05/Genet-a-Collection-of-Critical-Essays-by-Elisa-S-Moncarz.pdf
    • http://muicuiu.dumb1.com/8a03a08a04a03a09/Zamyatin-s-We-A-Collection-Of-Critical-Essays-by-Gary-Kern.pdf
    • http://muicuiu.dumb1.com/5a06a08a06a01a06/Flaubert-A-Collection-Of-Critical-Essays-by-Raymond-Giraud.pdf
    • http://muicuiu.dumb1.com/1a08a02a08a04a04/Kafka-A-Collection-of-Critical-Essays-by-Ronald-Gray.pdf
    • http://muicuiu.dumb1.com/1a01a09a03a07a06a05/Solzhenitsyn-A-Collection-Of-Critical-Essays-by-Kathryn-B-Feuer.pdf
    • http://muicuiu.dumb1.com/2a03a02a03a07a08/Twentieth-Century-Interpretations-of-the-Great-Gatsby-A-Collection-of-Critical-Essays-by-Ernest-Lockridge.pdf
    • http://muicuiu.dumb1.com/4a03a00a09a08a04/The-Age-of-Innocence-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/2a09a00a02a04a03/Xingu-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/4a04a07a09a09a06/The-Age-of-Innocence-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/5a04a05a00a02/The-Buccaneers-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/1a06a07a06a05a07/The-Children-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/3a04a03a07a07a05/A-Son-at-the-Front-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/3a09a02a09a09a09/The-Age-of-Innocence-by-Edith-Wharton.pdf
    • http://muicuiu.dumb1.com/7a04a08a03

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