Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea26e1376a00529f…

MALICIOUS

PDF

17.0 KB Created: 2019-04-25 00:47:34 +01:00 Authoring application: mPDF 5.7
MD5: e566f6e2bb53995316b836b756416850 SHA-1: a6e76db050e50ea0642b3a1d4f564709776c16e7 SHA-256: ea26e1376a00529f5ea9eaf2f06079c823eea237c3f0e95445118005000f067d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves directing users to a multitude of external PDF documents, likely for SEO poisoning or to host malicious content. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9787

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/2a09a00a06a03a09/Cassidy-Jones-and-Vulcan-s-Gift-Cassidy-Jones-Adventures-2-by-Elise-Stokes.pdf
    • http://muicuiu.dumb1.com/2a09a00a06a03a08/Cassidy-Jones-and-the-Secret-Formula-Cassidy-Jones-Adventures-1-by-Elise-Stokes.pdf
    • http://muicuiu.dumb1.com/5a00a05a09a03/Cassidy-Jones-and-the-Secret-Formula-Cassidy-Jones-Adventures-1-by-Elise-Stokes.pdf
    • http://muicuiu.dumb1.com/3a03a02a09a00a01/Cassidy-Jones-and-the-Luminous-Cassidy-Jones-Adventures-4-by-Elise-Stokes.pdf
    • http://muicuiu.dumb1.com/1a00a06a04a01a01/Looking-for-JJ-Jennifer-Jones-1-by-Anne-Cassidy.pdf
    • http://muicuiu.dumb1.com/6a08a07a02a04a07/Off-The-Beaten-Path---A-Steve-Cassidy-Mystery-Steve-Cassidy-3-by-John-Schlarbaum.pdf
    • http://muicuiu.dumb1.com/6a00a08a04a00a03/The-Cathy-Cassidy-Dreams-and-Doodles-Daybook-by-Cathy-Cassidy.pdf
    • http://muicuiu.dumb1.com/7a05a03a05a03a07/The-Jonestown-Massacre-The-Transcript-of-Reverend-Jim-Jones-Last-Speech-Guyana-1978-by-Jim-Jones.pdf
    • http://muicuiu.dumb1.com/7a05a04a03a05a02/-orientalist-Jones-Sir-William-Jones-Poet-Lawyer-and-Linguist-1746-1794-by-Michael-J-Franklin.pdf
    • http://muicuiu.dumb1.com/1a02a05a06a00/The-Taming-of-Billy-Jones-The-Jones-Gang-10-by-Christine-Rimmer.pdf
    • http://muicuiu.dumb1.com/2a08a04a01a04/High-Bonnet-A-Novel-of-Epicurean-Adventures-by-Idwal-Jones.pdf
    • http://muicuiu.dumb1.com/1a00a07a03a04a07/Double-Life-The-Adventures-of-Josiah-Jones-1-by-Dawson-Vosburg.pdf
    • http://muicuiu.dumb1.com/3a03a04a01a03a08/The-Daring-Adventures-of-Penhaligon-Brush-by-Sally-Jones-Rogan.pdf
    • http://muicuiu.dumb1.com/8a06a06a03a03/Scarlett-by-Cathy-Cassidy.pdf
    • http://muicuiu.dumb1.com/1a08a00a08a09a09/We-Like-Kindergarten-by-Clara-Cassidy.pdf
    • http://muicuiu.dumb1.com/3a01a06a05a04a02/Without-a-Sound-by-Carla-Cassidy.pdf
    • http://muicuiu.dumb1.com/3a00a09a01a02a01/Skylark-by-Sara-Cassidy.pdf
    • http://muicuiu.dumb1.com/3a07a07a03a06a04/The-Dark-by-David-C-Cassidy.pdf
    • http://muicuiu.dumb1.com/6a08a04a06a01a09/The-First-Noelle-by-Carla-Cassidy.pdf
    • http://muicuiu.dumb1.com/3a07a08a03a02a08/What-the-Heart-Wants-by-Cassidy-Ryan.pdf

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