Malicious PDF — malware analysis report

Static analysis result for SHA-256 585529b20ae0ab60…

MALICIOUS

PDF

17.5 KB Created: 2019-04-30 02:39:43 +01:00 Authoring application: mPDF 5.7
MD5: 2c21644bc0bce6d8ea103e09bf24ea24 SHA-1: a50514e437015ce5e16f39bce68f5c56412f06ea SHA-256: 585529b20ae0ab601b5910919d015a5bb12d0439fdf7376384f9d5d27bf5e9c3
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to external PDF files. The ML_NYX_PDF_MALICIOUS classifier also flagged this document with high confidence. The embedded URLs, while currently marked as benign, are part of a link farm strategy, suggesting a potential attempt to drive traffic or distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/2a00a04a06a03a08/DarkWolfe-Sons-of-de-Wolfe-de-Wolfe-Pack-9-by-Kathryn-Le-Veque.pdf
    • http://muicuiu.dumb1.com/2a00a04a06a03a05/Nighthawk-Sons-of-de-Wolfe-de-Wolfe-Pack-7-by-Kathryn-Le-Veque.pdf
    • http://muicuiu.dumb1.com/3a05a06a08a08a04/Archie-Meets-Nero-Wolfe-A-Prequel-to-Rex-Stout-s-Nero-Wolfe-Mysteries-Nero-Wolfe-Novels-by-Robert-Goldsborough-8-by-Robert-Goldsborough.pdf
    • http://muicuiu.dumb1.com/3a00a01a06a00a00/Red-amp-Wolfe-Part-One-Red-amp-Wolfe-1-by-Ella-James.pdf
    • http://muicuiu.dumb1.com/3a09a04a06a06a06/Red-amp-Wolfe-Part-Four-Red-amp-Wolfe-4-by-Ella-James.pdf
    • http://muicuiu.dumb1.com/8a09a08a09a07a03/Waking-Wolfe-Scott-Wolfe-1-by-S-L-Shelton.pdf
    • http://muicuiu.dumb1.com/3a07a04a06a03a04/Wolfe-Winter-Big-Bad-Wolfe-5-by-Joan-Hohl.pdf
    • http://muicuiu.dumb1.com/2a05a08a04a01/The-Best-of-Gene-Wolfe-A-Definitive-Retrospective-of-His-Finest-Short-Fiction-by-Gene-Wolfe.pdf
    • http://muicuiu.dumb1.com/8a04a04a09a02a00/The-Haunting-of-Nathaniel-Wolfe-Nathaniel-Wolfe-1-by-Brian-Keaney.pdf
    • http://muicuiu.dumb1.com/4a02a04a01a04a03/Charlotte-Au-Chocolat-Memories-of-a-Restaurant-Girlhood-by-Charlotte-Silver.pdf
    • http://muicuiu.dumb1.com/3a07a07a04a07a02/A-Study-in-Charlotte-Charlotte-Holmes-1-by-Brittany-Cavallaro.pdf
    • http://muicuiu.dumb1.com/4a00a06a08a04a03/A-Study-in-Charlotte-Charlotte-Holmes-1-by-Brittany-Cavallaro.pdf
    • http://muicuiu.dumb1.com/7a07a05a04a08a06/Villette-Novel-by-Charlotte-Bronte-Introduction-By-Mrs-Humphry-Ward-Illustrated-with-Portraits-and-Wievs-by-Charlotte-Bront-.pdf
    • http://muicuiu.dumb1.com/6a00a02a07a09a07/The-5-Heads-of-Humbert-Wolfe-by-Humbert-Wolfe.pdf
    • http://muicuiu.dumb1.com/3a06a04a08a06/The-Terror-by-Dan-Simmons.pdf
    • http://muicuiu.dumb1.com/2a07a07a07a04a04/Ilium-by-Dan-Simmons.pdf
    • http://muicuiu.dumb1.com/6a04a08a08a03a05/Hyperion-by-Dan-Simmons.pdf
    • http://muicuiu.dumb1.com/1a05a05a09a08a08/Flu-Flu-1-by-Wayne-Simmons.pdf
    • http://muicuiu.dumb1.com/2a07a08a04a05a06/Ilium-by-Dan-Simmons.pdf
    • http://muicuiu.dumb1.com/1a00a09a00a01/Drood-by-Dan-Simmons.pdf
    • http://muicuiu.dumb1.com/3a07a04a06a03a04/Wolfe-Winter-Big-Bad-Wolfe-5-by-Jo

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