Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3b46f7b97275099…

MALICIOUS

PDF

13.6 KB Created: 2019-04-30 04:25:13 +01:00 Authoring application: mPDF 5.7
MD5: df254ebddf8702516d197f437a3b1dbe SHA-1: 9a33c47a08930fefbef6263bbbd65c5a08b94833 SHA-256: b3b46f7b97275099ac4685c9c3b875ca3f68cdf097403d20feff831e885e6d8f
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While the URLs themselves are currently marked as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to serve as a distribution point for further malicious content. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/1a05a08a00a00a06/The-Guilty-One-by-Sophie-Littlefield.pdf
    • http://muicuiu.dumb1.com/2a05a05a09a09/House-of-Glass-by-Sophie-Littlefield.pdf
    • http://muicuiu.dumb1.com/1a06a08a05a00a07/Garden-of-Stones-by-Sophie-Littlefield.pdf
    • http://muicuiu.dumb1.com/3a02a04a09a06a03/Aftertime-Aftertime-1-by-Sophie-Littlefield.pdf
    • http://muicuiu.dumb1.com/1a06a09a01a04a02/Banished-Banished-1-by-Sophie-Littlefield.pdf
    • http://muicuiu.dumb1.com/8a02a04a06a03a01/Infected-Infected-1-by-Scott-Sigler.pdf
    • http://muicuiu.dumb1.com/9a00a07a01a01a02/Sophie-s-War-The-Journal-Of-Anna-Sophie-Franziska-Guenther-by-Janice-Shefelman.pdf
    • http://muicuiu.dumb1.com/2a02a00a06a02a07/The-Dogs-of-Littlefield-by-Suzanne-Berne.pdf
    • http://muicuiu.dumb1.com/4a05a08a05a03a03/Timeless-Nights-by-Ginny-Littlefield.pdf
    • http://muicuiu.dumb1.com/1a03a08a05a05a00/The-Dogs-of-Littlefield-by-Suzanne-Berne.pdf
    • http://muicuiu.dumb1.com/4a07a09a00a01a09/Sophie-and-the-Wax-Doll-Bilingual-Sophie-s-Misfortunes-1-by-Comtesse-de-S-gur.pdf
    • http://muicuiu.dumb1.com/1a01a08a02a09a06a04/Sophie-the-Chatterbox-Sophie-Miller-3-by-Lara-Bergen.pdf
    • http://muicuiu.dumb1.com/2a07a05a06a09a09/Sophie-the-Awesome-Sophie-1-by-Lara-Bergen.pdf
    • http://muicuiu.dumb1.com/3a06a00a03a08a04/Survive-for-Now-The-Infected-Dead-2-by-Bob-Howard.pdf
    • http://muicuiu.dumb1.com/1a01a05a01a00a02/Contagious-Infected-2-by-Scott-Sigler.pdf
    • http://muicuiu.dumb1.com/8a05a03a08a01a03/The-Fall-Infected-1-by-Caleb-Cleek.pdf
    • http://muicuiu.dumb1.com/2a09a01a06a04a06/Proxy-Reunions-The-Infected-4-by-P-S-Power.pdf
    • http://muicuiu.dumb1.com/1a09a02a04a08a03/Bloodlines-Infected-2-by-Andrea-Speed.pdf
    • http://muicuiu.dumb1.com/3a03a07a03a09a05/Life-After-Death-Infected-3-by-Andrea-Speed.pdf
    • http://muicuiu.dumb1.com/3a06a00a09a08a01/Death-Sentence-The-Infected-4-by-Joseph-Zuko.pdf
    • http://muicuiu.dumb1.com/1a01a08a02a09a06a04/Sophie-the-Cha

Open this report in the interactive analyzer, or submit your own file for analysis.