Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3cae58828fe5795…

MALICIOUS

PDF

15.2 KB Created: 2019-04-30 04:48:17 +01:00 Authoring application: mPDF 5.7
MD5: e991f02c99611974ff4cd0786c849c57 SHA-1: 5cb40cb81a7c7973f5c5f4a1895d01d99ec4dcb1 SHA-256: e3cae58828fe5795bdcbc5319ddded4a15eb94a571687b3aa816a80c02c83e9b
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the PDF structure and link farm heuristic strongly suggest a malicious intent to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/5a09a08a08a01/Second-Chances-When-Seconds-Count-1-by-D-L-Roan.pdf
    • http://muicuiu.dumb1.com/2a01a04a06a04/The-Black-Count-Glory-Revolution-Betrayal-and-the-Real-Count-of-Monte-Cristo-by-Tom-Reiss.pdf
    • http://muicuiu.dumb1.com/1a06a06a05a03a02/Unexpected-Chances-Chances-1-by-A-M-Willard.pdf
    • http://muicuiu.dumb1.com/4a04a03a08a05a07/Unexpected-Chances-Chances-1-by-A-M-Willard.pdf
    • http://muicuiu.dumb1.com/9a05a02a01a07/No-Second-Chances-Chances-1-by-Beverley-Hollowed.pdf
    • http://muicuiu.dumb1.com/8a07a07a02a08/Out-of-Nowhere-Middle-of-Somewhere-2-by-Roan-Parrish.pdf
    • http://muicuiu.dumb1.com/4a09a00a02a07a06/Blindfold-Fantasy-by-D-L-Roan.pdf
    • http://muicuiu.dumb1.com/2a03a05a03a04a04/Something-Permanent-Middle-of-Somewhere-2-1-by-Roan-Parrish.pdf
    • http://muicuiu.dumb1.com/2a07a03a09a04a05/Where-We-Left-Off-Middle-of-Somewhere-3-by-Roan-Parrish.pdf
    • http://muicuiu.dumb1.com/3a01a08a03a00a01/The-Blue-Roan-Child-by-Jamieson-Findlay.pdf
    • http://muicuiu.dumb1.com/3a07a07a00a06a05/The-Remaking-of-Corbin-Wale-by-Roan-Parrish.pdf
    • http://muicuiu.dumb1.com/1a01a07a08a02a02/The-Blue-Roan-Child-by-Jamieson-Findlay.pdf
    • http://muicuiu.dumb1.com/4a07a08a02a03a02/Roan-The-Tales-of-Conor-Archer-by-E-R-Barr.pdf
    • http://muicuiu.dumb1.com/1a09a02a06a01a03/Invitation-to-the-Blues-Small-Change-2-by-Roan-Parrish.pdf
    • http://muicuiu.dumb1.com/2a00a02a04a05a05/The-Heart-of-Falcon-Ridge-The-McLendon-Family-Saga-1-by-D-L-Roan.pdf
    • http://muicuiu.dumb1.com/4a03a03a08a00a04/30-Seconds-by-Chrys-Fey.pdf
    • http://muicuiu.dumb1.com/1a01a00a01a05a05/180-Seconds-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/3a04a03a06a05a07/Anyone-for-Seconds-by-Fiona-Cassidy.pdf
    • http://muicuiu.dumb1.com/5a05a08a05a02a03/180-Seconds-by-Jessica-Park.pdf
    • http://muicuiu.dumb1.com/4a09a06a08a05a03/Sinful-Seconds-by-Elisabeth-Naughton.pdf
    • http://muicuiu.dumb1.com/2a03a05a03a04a04/Something-Permanent-Mi

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