Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26fb0895a31a9bb…

MALICIOUS

PDF

13.1 KB Created: 2019-05-06 16:51:01 +01:00 Authoring application: mPDF 5.7
MD5: d3f5ee41d66077ec895e4295b06832ba SHA-1: 9d84f24653ceaaf7e6d1287ea5221ce9472e05fe SHA-256: f26fb0895a31a9bbe1b6c2d1995773d5570c6cd1ac6602f8e7684a3ee6cfc72f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a mass of external links, identified by the PDF_SEO_LINK_FARM heuristic. While the extracted URLs themselves are currently benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to serve as a landing page for further malicious activity. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8891

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/4a02a06a04a06a01/The-Secret-Sharer-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/3a02a05a05a04a09/The-Secret-Sharer-and-Other-Stories-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/2a06a03a09a03a07/The-Secret-Sharer-and-other-stories-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a03a07a04a08a07/The-Secret-Sharer-Le-Compagnon-Secret-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/6a09a02a05a02a01/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/7a07a01a00a03a05/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a04a08a08a03a01/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a02a08a04a04/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/2a03a04a04a06a02/The-Heart-Of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/8a08a03a04a05a01/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/5a08a03a05a01a04/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/1a01a05a07a02a08a02/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/9a00a05a01a02a02/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a00a03a09a00a02/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/9a09a08a04a04a03/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/8a02a02a02a09a02/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/6a01a05a09a07a06/Heart-of-Darkness-by-Joseph-Conrad.pdf
    • http://muicuiu.dumb1.com/9a03a08a06a02a06/Heart-of-Darkness-illustrated-by-Joseph-Conrad.pdf

Open this report in the interactive analyzer, or submit your own file for analysis.