Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa9d8ae1356db285…

MALICIOUS

PDF

16.6 KB Created: 2019-04-28 12:48:59 +01:00 Authoring application: mPDF 5.7
MD5: e9f20f748ddb79dd8c5e1a293914dd07 SHA-1: aff9dfec2e008ac0534aa975d19b22f5489b99ee SHA-256: fa9d8ae1356db2856676c8bab148baaf3c004eda9151ecf621932ca9ceb72103
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While most of these links point to benign content, the sheer volume and the nature of the heuristic suggest a potential attempt at SEO manipulation or a lure to a malicious site. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. No scripts were extracted from this sample, and the document body was unreadable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9810

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/1a00a06a04a01a01/Looking-for-JJ-Jennifer-Jones-1-by-Anne-Cassidy.pdf
    • http://muicuiu.dumb1.com/5a00a05a09a03/Cassidy-Jones-and-the-Secret-Formula-Cassidy-Jones-Adventures-1-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/2a09a00a06a03a09/Cassidy-Jones-and-Vulcan-s-Gift-Cassidy-Jones-Adventures-2-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/3a02a00a03a06/The-Dead-House-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/2a02a09a06a07a05/Anne-Frank-by-Jennifer-Hansen.pdf
    • http://muicuiu.dumb1.com/1a00a09a06a03a08/The-Tale-of-a-Boy-an-Elf-and-a-Very-Stinky-Fish-Jackson-Jones-1-by-Jennifer-Kelly.pdf
    • http://muicuiu.dumb1.com/2a02a01a09a01a03/The-Siren-s-Cry-The-Otherworldlies-2-by-Jennifer-Anne-Kogler.pdf
    • http://muicuiu.dumb1.com/3a00a06a05a07a05/The-Key-True-Reign-1-by-Jennifer-Anne-Davis.pdf
    • http://muicuiu.dumb1.com/1a00a03a00a07a09/L-M-Montgomery-s-Anne-of-Green-Gables-by-Jennifer-Dussling.pdf
    • http://muicuiu.dumb1.com/5a08a06a07a02/Cage-of-Destiny-Reign-of-Secrets-3-by-Jennifer-Anne-Davis.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/2a05a09a07a01a08/Belinda-Anne-Rice-writing-as-Anne-Rampling-by-Anne-Rampling.pdf
    • http://muicuiu.dumb1.com/1a02a03a05a07/Just-One-Kiss-by-Carla-Cassidy.pdf
    • http://muicuiu.dumb1.com/8a06a06a03a03/Scarlett-by-Cathy-Cassidy.pdf
    • http://muicuiu.dumb1.com/1a00a09a06a03a08/The-Tale-of-a-Boy-an-

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