Malicious PDF — malware analysis report

Static analysis result for SHA-256 19b91452600e1202…

MALICIOUS

PDF

16.6 KB Created: 2019-05-05 13:21:00 +01:00 Authoring application: mPDF 5.7
MD5: 522fb3d1acec9fe5e574eddfe585dc28 SHA-1: 0dbf03dd39993f969bb5a60a9afb2ce00796d013 SHA-256: 19b91452600e120222cfedea2710ee13d3c8a5bac8e1ddba0a18e15ec220e78f
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, which is a common tactic for distributing malicious content. The ML classifier also flagged the document as malicious with high confidence. While the document body is heavily obfuscated, the presence of numerous URLs suggests an attempt to redirect users to potentially harmful sites, likely disguised as legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/2a05a00a09a02a07/Mindful-Running-How-Meditative-Running-can-Improve-Performance-and-Make-you-a-Happier-More-Fulfilled-Person-by-MacKenzie-L-Havey.pdf
    • http://muicuiu.dumb1.com/2a05a01a07a01a04/Running-With-the-Devil-Running-1-by-Lorelei-James.pdf
    • http://muicuiu.dumb1.com/2a00a03a06/Need-by-Joelle-Charbonneau.pdf
    • http://muicuiu.dumb1.com/2a05a00a09a01a03/The-27th-Mile-by-Ray-Charbonneau.pdf
    • http://muicuiu.dumb1.com/2a05a00a09a00a03/Overthinking-the-Marathon-by-Ray-Charbonneau.pdf
    • http://muicuiu.dumb1.com/4a03a06a07a02/Graduation-Day-The-Testing-3-by-Joelle-Charbonneau.pdf
    • http://muicuiu.dumb1.com/9a09a05a06a01a00/Corpus-Earthling-by-Louis-Charbonneau.pdf
    • http://muicuiu.dumb1.com/4a08a01a07a09/Independent-Study-The-Testing-2-by-Joelle-Charbonneau.pdf
    • http://muicuiu.dumb1.com/5a04a07a00a02a07/A-Chorus-Line-Up-Glee-Club-3-by-Joelle-Charbonneau.pdf
    • http://muicuiu.dumb1.com/1a09a04a08a07a03/Murder-for-Choir-Glee-Club-1-by-Joelle-Charbonneau.pdf
    • http://muicuiu.dumb1.com/3a06a00a03a07a00/Skating-Over-the-Line-Rebecca-Robbins-2-by-Joelle-Charbonneau.pdf
    • http://muicuiu.dumb1.com/3a07a08a07a04a01/Watch-Over-Me-Code-Talker-Chronicles-Book-2-by-Eileen-Charbonneau.pdf
    • http://muicuiu.dumb1.com/2a05a00a08a09a07/Barefoot-Running-Step-by-Step-Barefoot-Ken-Bob-The-Guru-of-Shoeless-Running-Shares-His-Personal-Technique-by-Roy-Wallack.pdf
    • http://muicuiu.dumb1.com/5a04a06a09a03a04/The-Testing-Trilogy-The-Testing-1-3-by-Joelle-Charbonneau.pdf
    • http://muicuiu.dumb1.com/1a04a05a06a05a03/Running-by-H-Carlin.pdf
    • http://muicuiu.dumb1.com/5a01a01a01a09a02/Keep-On-Running-by-Ted-Harriott.pdf
    • http://muicuiu.dumb1.com/2a03a06a08a01a07/Fox-Running-by-R-R-Knudson.pdf
    • http://muicuiu.dumb1.com/1a00a04a05a03a08a01/Running-by-Cara-Hoffman.pdf
    • http://muicuiu.dumb1.com/3a07a01a01a03a01/Running-Wild-by-J-G-Ballard.pdf
    • http://muicuiu.dumb1.com/3a00a05a09a05a02/Running-by-Jean-Echenoz.pdf

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