Malicious PDF — malware analysis report

Static analysis result for SHA-256 def12a3693123f9e…

MALICIOUS

PDF

12.3 KB Created: 2019-04-29 23:17:11 +01:00 Authoring application: mPDF 5.7
MD5: 1bd8d8abc85b034c5bf7be4314fe857b SHA-1: bb7abbd9cf2ac9441cb040b38c597ea08eefbf04 SHA-256: def12a3693123f9e6446f7e373d0cbdcf61560360936937a3cb4e901748a7102
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external websites, identified as a PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious. The document body consists of these URLs, suggesting the primary purpose is to redirect users to these sites, likely for SEO poisoning or to host further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

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/7a05a01a09/Marked-By-Pain-The-Marked-2-by-Cece-Rose.pdf
    • http://muicuiu.dumb1.com/4a05a00a05a09a05/Marked-Men-Complete-Collection-Marked-Men-1-6-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/6a06a04a06a08/Marked-Men-Series-Marked-Men-1-6-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/1a06a02a08a03a09/Marked-Marked-1-by-A-N-Meade.pdf
    • http://muicuiu.dumb1.com/1a01a02a06a03a07/The-Marked-Ones-by-S-K-Munt.pdf
    • http://muicuiu.dumb1.com/4a01a08a03a09/Jet-Marked-Men-2-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/1a01a00a04a04a07/Marked-by-T-L-McDonald.pdf
    • http://muicuiu.dumb1.com/3a04a06a03a01a00/Marked-by-Monstreph.pdf
    • http://muicuiu.dumb1.com/3a04a02a04a09a00/Jet-Marked-Men-2-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/3a07a04a02a06a09/Asa-Marked-Men-6-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/2a00a06a03a08a01/Eve-of-Warfare-Marked-3-25-by-S-J-Day.pdf
    • http://muicuiu.dumb1.com/4a04a03a03a07a05/Nash-Marked-Men-4-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/3a07a06a07a00a06/Nash-Marked-Men-4-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/2a01a02a09a04a03/Marked-1-by-Angela-Caldwell.pdf
    • http://muicuiu.dumb1.com/6a02a02a07a03/Rome-Marked-Men-3-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/3a08a01a04a01a05/Rome-Marked-Men-3-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/1a00a08a06a06a06/Marked-The-Beginning-by-K-C-Purdon.pdf
    • http://muicuiu.dumb1.com/2a09a03a03a05a09/Rowdy-Marked-Men-5-by-Jay-Crownover.pdf
    • http://muicuiu.dumb1.com/5a05a00a09/Iniquitous-The-Marked-3-by-Bianca-Scardoni.pdf
    • http://muicuiu.dumb1.com/2a08a01a02/Marked-in-Flesh-The-Others-4-by-Anne-Bishop.pdf
    • http://muicuiu.dumb1.com/3a08a01a04a01a05/Rome-Mark

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