Malicious PDF — malware analysis report

Static analysis result for SHA-256 212e0865a5f4af73…

MALICIOUS

PDF

17.2 KB Created: 2019-05-02 01:32:47 +01:00 Authoring application: mPDF 5.7
MD5: 1de345f58ef44520dd392b4f08a5f2d3 SHA-1: d1bd438586b55841926fa34c4b5c910614c0a1d6 SHA-256: 212e0865a5f4af73773bcc8d6407598db45cf8ce890ca366cf3a652fdf04beff
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The embedded URLs, while individually marked as benign, collectively form a link farm, suggesting a social engineering tactic to direct users to potentially malicious content or to manipulate search engine results. 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/1a01a00a05a07a01a00/Matilda-The-Chocolate-Cake-Edition-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/7a08a09a00a06a02/Roald-Dahl-Omnibus-Charlie-and-the-Chocolate-Factory-James-and-the-Giant-Peach-Fantastic-Mr-Fox-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/3a02a01a01a07/Matilda-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/1a09a00a09a08a03/Matilda-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/7a03a09a02a09a05/Matilda-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/8a06a03a00a07a09/Matilda-Englische-Lekt-re-f-r-das-3-und-4-Lernjahr-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/3a03a02a00a02a06/The-BFG-Matilda-George-s-Marvellous-Medicine-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/3a00a04a06a00a02/Charlie-and-the-Chocolate-Factory-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/1a00a01a06a09a06a06/Charlie-and-the-Chocolate-Factory-Movie-Tie-In-Novel-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/8a07a07a06a03a00/Charlie-And-The-Chocolate-Factory-Gift-Book-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/3a07a06a02a09a08/The-Gremlins-The-Lost-Walt-Disney-Production-A-Royal-Air-Force-Story-by-Flight-Lieutenant-Roald-Dahl-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/1a00a01a08a09a08/The-Roald-Dahl-Omnibus-Perfect-Bedtime-Stories-for-Sleepless-Nights-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/6a05a06a04a09/Charlie-and-the-Chocolate-Factory-and-Charlie-and-the-Great-Glass-Elevator-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/4a00a01a01a07a04/Charlie-and-the-Chocolate-Factory-Charlie-Bucket-1-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/6a01a06a01a03/Boy-and-Going-Solo-Roald-Dahl-s-Autobiography-1--2-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/7a08a08a09a05a00/Roald-Dahl-s-Mischief-and-Mayhem-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/7a08a08a09a05a09/Roald-Dahl-Magical-Mischief-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/8a00a05a06a06/The-Roald-Dahl-Collection-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/7a08a08a09a05a01/Roald-Dahl-s-Cookbook-by-Roald-Dahl.pdf
    • http://muicuiu.dumb1.com/7a08a09a00a06a03/Roald-Dahl-Gift-Set-by-Roald-Dahl.pdf

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