Malicious PDF — malware analysis report

Static analysis result for SHA-256 31615bb3b2f0c578…

MALICIOUS

PDF

16.0 KB Created: 2019-04-30 06:45:26 +01:00 Authoring application: mPDF 5.7 First seen: 2020-08-10
MD5: 72f4dd71cdeb7f676e08067e2c5c3518 SHA-1: 6da6babff6770510afb1c3d70042d266ea835994 SHA-256: 31615bb3b2f0c5786f518073dab08d534f5a1d5671254ef0285ba0ba54c3ccef
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While many of these links were classified as benign, the sheer volume and the ML_NYX_PDF_MALICIOUS classification indicate a malicious intent, likely for SEO spam or to distribute further malicious content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

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/6a00a06a06a04a02/Rick-Steves-Italy-2007-by-Rick-Steves.pdf In PDF document text
    • http://muicuiu.dumb1.com/1a01a06a01a00a06a03/Rick-Steves-Great-Britain-2007-by-Rick-Steves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a05a07a04a04a01/Rick-Steves-Europe-Through-the-Back-Door-2015-The-Travel-Skills-Handbook-by-Rick-Steves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a01a01a02a04a08/Rick-Steves-Mona-Winks-Self-Guided-Tours-of-Europe-s-Top-Museums-by-Rick-Steves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a08a02a02a02a00/Rick-Steves-Tour-Hofburg-Imperial-Apartments-Vienna-by-Rick-Steves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a04a06a03a05a08/Rick-Steves-Mediterranean-Cruise-Ports-by-Rick-Steves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a05a05a05/Rick-Steves-Europe-Through-the-Back-Door-by-Rick-Steves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a02a00a09a01a04/Rick-Steves-Amsterdam-amp-the-Netherlands-by-Rick-Steves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a00a06a07a02a01/Travel-as-a-Political-Act-by-Rick-Steves.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a05a09a08a03a08/Uncanny-X-Force-by-Rick-Remender-The-Complete-Collection-Volume-1-by-Rick-Remender.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a05a09a08a01a09/Secret-Avengers-by-Rick-Remender-Volume-2-by-Rick-Remender.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a07a05a08a09/Rick-Bayless-s-Mexican-Kitchen-by-Rick-Bayless.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a00a01a06a09a01/Rick-Stein-s-Far-Eastern-Odyssey-by-Rick-Stein.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a06a07a03a05a00/Glow-The-Autobiography-of-Rick-James-by-Rick-James.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a03a00a03a08a09/Rick-Hansen-Man-In-Motion-by-Rick-Hansen.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a05a07a04a04a04/How-I-Met-My-Man-by-Rick-R-Reed.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a00a07a04a04a00/The-Wiz-Biz-Wiz-1-2-by-Rick-Cook.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a05a04a08a02a01/The-One-by-Rick-Veitch.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a04a06a00a06/God-s-Light-by-Rick-Scarnati.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a01a03a08a07a08/Legally-Wed-by-Rick-R-Reed.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a05a09a08a03a08/Uncanny-X-ForIn PDF document text

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