Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad1426427006a1e…

MALICIOUS

PDF

12.0 KB Created: 2019-05-07 03:45:32 +01:00 Authoring application: mPDF 5.7
MD5: e783a21746ba1baf414fb52d6f343370 SHA-1: cdd484f0bdd4d9c8180cc6d3a19768b5f9377d3a SHA-256: cad1426427006a1ed2c6d5a6afa827ce833774e1bda4d4859e967d5a02b3bc9f
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 to external PDF documents hosted on the domain 'muicuiu.dumb1.com'. This pattern is indicative of a link farm or a phishing lure designed to direct users to potentially malicious content. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact nature of the lure beyond the link farm. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8737

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/6a00a00a04a03a01/Lucio-s-Poems-by-Lucio-Presutti.pdf
    • http://muicuiu.dumb1.com/9a04a02a06a06a00/Nalle-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/8a03a05a03a03a08/Son-Pari-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/1a00a09a04a04a02a02/Greystones-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/9a03a02a08a08a05/The-Silmarillion-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/9a09a03a09a05a04/Kobra-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/7a02a03a08a08a01/The-Dickies-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/1a00a05a08a00a06a05/The-Rasmus-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/7a00a08a08a03a03/Souterrain-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/5a06a06a05a06a05/The-Decalogue-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/6a07a04a00a01a07/The-Libertines-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/8a00a04a07a02a07/Son-of-Maryam-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/7a01a09a04a01a01/Minuscule-801-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/8a02a02a08a04a03/Edict-of-Nantes-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/8a06a00a04a00a05/Canavan-Disease-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/9a07a08a07a08a00/Hartwig-of-Uthlede-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/8a08a00a08a01a06/Friedrich-Durrenmatt-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/8a06a01a06a05a03/Eben-Moglen-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/8a05a02a07a04a06/Battle-of-Lutter-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/1a01a03a06a02a03a02/Arnulf-of-Chocques-by-Jesse-Russell.pdf
    • http://muicuiu.dumb1.com/9a07a08a07a08a00/Har

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