Malicious PDF — malware analysis report

Static analysis result for SHA-256 db1a366173acfa03…

MALICIOUS

PDF

12.6 KB Created: 2019-04-30 04:19:22 +01:00 Authoring application: mPDF 5.7
MD5: 995c018b3aba9eec9508a2d8f08cc75f SHA-1: fd2a93a2bccae98bbe447767b32757e9e0bdf3c1 SHA-256: db1a366173acfa036a17bfd5286c947556313e517a86c05911be0015e90882d9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with numerous links pointing to other PDF documents hosted on the domain 'muicuiu.dumb1.com'. This heuristic suggests the document is likely part of an SEO manipulation scheme or a distribution point for further malicious content. The ML classifier also flagged this PDF as malicious with a high probability. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

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/1a03a09a02a06a04/Lord-Jim-amp-Nostromo-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/1a00a06a07a01a04a03/Lord-Jim-99-Welt-Klassiker-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/7a06a09a02a06a01/Lord-Jim-Centaur-Classics-The-100-greatest-novels-of-all-time---71-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a05a01a08a09a09/Heart-of-Darkness-Joseph-Conrad-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/1a01a08a07a01a03a07/Heart-of-Darkness-the-Classic-Novel-by-Joseph-Conrad-Classic-Books-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/1a00a05a06a07a03a00/The-Joseph-Conrad-Collection-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/2a02a05a07a09a05/The-Mirror-of-the-Sea-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/5a05a01a08a09/Nostromo-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/1a03a07a09a00a00/Romance-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/7a05a01a01a06a01/Nostromo-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/3a08a04a04a09/Victory-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/2a09a02a02a05a09/Typhoon-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/3a09a06a09a07a00/The-Return-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a00a03a09a00a02/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/2a03a04a04a06a02/The-Heart-Of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/5a06a01a07a08a03/Le-coeur-des-t-n-bres-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/4a09a09a08a07a09/Almayer-s-Folly-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/7a07a01a00a03a05/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a09a02a05a02a01/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/2a02a05a04a04a09/The-Nigger-of-the-Narcissus-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a00a03a09a00a02/Heart-of-Darkness

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