Malicious PDF — malware analysis report

Static analysis result for SHA-256 a192b55850982923…

MALICIOUS

PDF

14.7 KB Created: 2019-04-30 04:29:12 +01:00 Authoring application: mPDF 5.7 First seen: 2021-10-14
MD5: b7b202282a95e4e2b20824d7079052e2 SHA-1: 092b86cad66e3a0f78c3a43c078e03fa8c3982aa SHA-256: a192b558509829234554409b340fee4f6b07a8f6b2aadcb3cefa9b619c7ae745
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. While the document body is heavily obfuscated, the presence of numerous links to external PDF files suggests an attempt to manipulate search engine results or distribute additional content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/1a00a03a04a06a08a07/The-Buchanan-s-Redemption-Buchanan-Brothers-8-by-Alexx-Andria.pdf In PDF document text
    • http://muicuiu.dumb1.com/3a02a07a08a04a01/Bought-By-The-Billionaire-Brothers-Buchanan-Brothers-2-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a07a08a03a04/Bought-By-The-Billionaire-Brothers-Buchanan-Brothers-5-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a07a08a03a07/Bought-by-the-Billionaire-Brothers-Buchanan-Brothers-4-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a07a06a04a00/Bought-By-The-Billionaire-Brothers-Buchanan-Brothers-6-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a03a04a06a09a03/Coerced-Blackmailed-by-the-Billionaire-Buchanan-Romance-1-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a03a04a07a05a08/The-Wedding-McKenzie-Brothers-1-5-by-Lexi-Buchanan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a07a06a08a07a09/Tail-of-Two-Brothers-Horsfall-1-by-Jade-Buchanan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a03a03a09a06a00/PAYBACK-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a05a06a08a00a06/All-Dogs-Bite-Club-Chrome-2-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a07a05a06a07a02/One-Naughty-Girl-3-Landry-James-3-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a08a06a06a07a02/The-Last-Place-I-Want-to-Be-by-P-Buchanan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a09a03a09a00/Leverage-Part-1-Leverage-1-by-Alexx-Andria.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a03a04a08a09a02/The-Name-s-Buchanan-by-Jonas-Ward.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a09a04a02a04a06/The-Hunter-by-Joann-H-Buchanan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a02a05a07a00a07/Virus-by-Bill-Buchanan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a05a01a04a04/Gift-by-Andrea-J-Buchanan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a04a04a02a03a04/Spellcasters-by-Kitka-Buchanan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a07a09a00a01a03/Sign-of-the-Times-by-Susan-Buchanan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a03a06a03a08a07/The-Professional-by-James-David-Buchanan.pdfIn PDF document text

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