Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c3f01e331ab9d7e…

MALICIOUS

PDF

17.7 KB Created: 2019-04-30 04:03:16 +01:00 Authoring application: mPDF 5.7
MD5: 6662323fefa0d44b4dfa5021ee46b573 SHA-1: 71609c14bfc2aaf74e0f003a65644cbabcb7ac60 SHA-256: 3c3f01e331ab9d7ed20acad42debcea875d569e133a640aeadad985bb48b8fe2
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While many of these URLs point to benign content, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to serve as a distribution point for further malware. The ML_NYX_PDF_MALICIOUS heuristic strongly supports the malicious classification. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/9a08a00a01a05a02/Two-Plays-of-the-French-Revolution-The-Fourteenth-of-July-and-Danton-by-Romain-Rolland.pdf
    • http://muicuiu.dumb1.com/5a04a03a01a04a06/Romain-Rolland-s-Essays-on-Music-by-Romain-Rolland.pdf
    • http://muicuiu.dumb1.com/4a09a06a02a02a00/Jean-Christophe-by-Romain-Rolland.pdf
    • http://muicuiu.dumb1.com/5a04a03a01a04a02/Mahatma-Gandhi-by-Romain-Rolland.pdf
    • http://muicuiu.dumb1.com/7a03a02a04a03a00/Pierre-et-Luce-Roman-historique-by-Romain-Rolland.pdf
    • http://muicuiu.dumb1.com/5a04a03a02a05a02/Romain-Rolland-and-the-Politics-of-Intellectual-Engagement-by-David-James-Fisher.pdf
    • http://muicuiu.dumb1.com/7a09a08a02a01a00/French-Football-Defender-Introduction-Julian-Cherel-Andre-Grillon-Rolland-Courbis-Moussa-Bezaz-Patrice-Neveu-Johan-Martial-by-Source-Wikipedia.pdf
    • http://muicuiu.dumb1.com/1a01a03a02a00a01a06/Johann-Christof-Johann-Christof-Kinder-Und-Jugendjahre---2-johann-Christof-in-Paris---3-johann-Christof-Am-Ziel-by-Romain-Rolland.pdf
    • http://muicuiu.dumb1.com/7a05a09a03a02a06/New-French-Plays-by-David-Bradby.pdf
    • http://muicuiu.dumb1.com/7a00a05a09a01a09/The-French-Revolution-by-Georges-Pernoud.pdf
    • http://muicuiu.dumb1.com/6a00a01a03a05a04/The-French-Revolution-Volume-III-by-Hippolyte-Taine.pdf
    • http://muicuiu.dumb1.com/3a02a01a04a00/The-Red-Necklace-French-Revolution-1-by-Sally-Gardner.pdf
    • http://muicuiu.dumb1.com/5a03a09a01a05a05/The-French-Revolution-2-Vols-by-Georges-Lefebvre.pdf
    • http://muicuiu.dumb1.com/8a00a02a04a03a00/In-Palace-and-Faubourg-A-Story-of-the-French-Revolution-by-T-F-G-.pdf
    • http://muicuiu.dumb1.com/2a03a08a06a01a07/The-Family-Romance-of-the-French-Revolution-by-Lynn-Hunt.pdf
    • http://muicuiu.dumb1.com/5a05a03a09a02a02/Paris-the-Provinces-and-the-French-Revolution-by-Alan-Forrest.pdf
    • http://muicuiu.dumb1.com/7a06a05a03a08a07/Scaramouche-A-Romance-of-the-French-Revolution-by-Rafael-Sabatini.pdf
    • http://muicuiu.dumb1.com/1a04a02a07a03a02/A-Critical-Dictionary-of-the-French-Revolution-by-Fran-ois-Furet.pdf
    • http://muicuiu.dumb1.com/1a05a03a08a02a04/The-Road-to-Compiegne-French-Revolution-2-by-Jean-Plaidy.pdf
    • http://muicuiu.dumb1.com/1a04a02a02a06a06/The-Silver-Blade-French-Revolution-2-by-Sally-Gardner.pdf
    • http://muicuiu.dumb1.com/1a01a03a02a00a01a06/Johann-Christof-Johann-Christof-

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