Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd702c77540390df…

MALICIOUS

PDF

13.3 KB Created: 2019-05-02 01:09:45 +01:00 Authoring application: mPDF 5.7
MD5: da1070fd632c387ee61ac5f30bcae837 SHA-1: 178076b69865f1ea5605c34304bebede7c0c1a3d SHA-256: bd702c77540390dfc66a3f813bf539306f9cf9ca179bc5889a4eab241f155a58
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting an attempt to manipulate search engine results or distribute content from these URLs. While most extracted URLs are marked as benign, the sheer volume and the ML classifier's high confidence score indicate malicious intent. No scripts were extracted from this sample, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/6a01a05a03a04/A-Death-In-Tuscany-Michele-Ferrara-2-by-Michele-Giuttari.pdf
    • http://muicuiu.dumb1.com/5a02a09a04a05a03/A-Florentine-Death-Michele-Ferrara-1-by-Michele-Giuttari.pdf
    • http://muicuiu.dumb1.com/3a02a06a06a00a09/Mud-Stories-of-Sex-and-Love-Michele-Roberts-by-Mich-le-Roberts.pdf
    • http://muicuiu.dumb1.com/1a04a05a02a05a02/Once-a-Ferrara-Wife-Ferrara-1-by-Sarah-Morgan.pdf
    • http://muicuiu.dumb1.com/2a05a02a06a04/The-Forbidden-Ferrara-Ferrara-2-by-Sarah-Morgan.pdf
    • http://muicuiu.dumb1.com/4a00a06a03a05a06/Rot-by-Michele-Lee.pdf
    • http://muicuiu.dumb1.com/6a03a01a06a09/DIA-by-Michele-Leggott.pdf
    • http://muicuiu.dumb1.com/7a01a05a07a01/Brunette-Ambition-by-Lea-Michele.pdf
    • http://muicuiu.dumb1.com/5a07a08a04a04a06/Wash-On-by-Mich-le-Marineau.pdf
    • http://muicuiu.dumb1.com/4a03a05a04a09a00/The-Roommates-by-Michele-Richard.pdf
    • http://muicuiu.dumb1.com/3a05a06a03a01a08/The-Client-by-Michele-M-Oneal.pdf
    • http://muicuiu.dumb1.com/1a00a01a08a02a08/Alone-Yet-Not-Alone-by-Tracy-Michele-Leininger.pdf
    • http://muicuiu.dumb1.com/5a07a08a07a07a02/Chemins-by-Mich-le-Lesbre.pdf
    • http://muicuiu.dumb1.com/3a05a00a08a00a02/Ignorance-by-Mich-le-Roberts.pdf
    • http://muicuiu.dumb1.com/2a07a08a03a02a02/XBar-by-Michele-L-Montgomery.pdf
    • http://muicuiu.dumb1.com/7a09a05a02a06a02/The-Reluctant-Elf-by-Michele-Gorman.pdf
    • http://muicuiu.dumb1.com/4a09a09a00a06/It-is-Hard-to-Look-at-What-We-See-Came-to-Think-We-d-Come-to-See-by-Michele-Glazer.pdf
    • http://muicuiu.dumb1.com/2a09a06a04a00a07/The-Faithful-One-by-Michele-Chynoweth.pdf
    • http://muicuiu.dumb1.com/2a06a03a03a00a04/Busted-by-Michele-I-Khoury.pdf
    • http://muicuiu.dumb1.com/2a06a03a00a07a01/Changes-of-the-Heart-by-Michele-Richard.pdf

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