Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d01ebe3bf37e0f3…

MALICIOUS

PDF

15.3 KB Created: 2019-04-30 03:19:38 +01:00 Authoring application: mPDF 5.7
MD5: ea4214766133aa43548010075d4746b5 SHA-1: f945f6aa00f26a2e8b2ccf3401b9a8daefea9273 SHA-256: 4d01ebe3bf37e0f33060f493eaa0a86a6ad5f4868f4485320c060c6544f1123f
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 the specific URLs appear benign, the sheer volume and structure suggest a link farm or a distribution mechanism for further malicious content. The ML_NYX_PDF_MALICIOUS heuristic also flagged the file with high confidence. No scripts were extracted from this sample, and the document body was unreadable, limiting the analysis of the exact lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/4a06a02a02a06a04/Casanova-s-Secret-Wife-by-Barbara-Lynn-Davis.pdf
    • http://muicuiu.dumb1.com/1a08a02a00a08a01/The-Bed-Wife-The-Bed-Wife-Chronicles-1-by-Suzanna-Lynn.pdf
    • http://muicuiu.dumb1.com/5a09a01a07a04a00/Memoirs-of-Casanova-Volume-02-a-Cleric-in-Naples-by-Giacomo-Casanova.pdf
    • http://muicuiu.dumb1.com/1a02a01a07a06/A-Wife-for-Papa-by-Lynn-Collum.pdf
    • http://muicuiu.dumb1.com/1a09a06a01a06a00/The-Chocolatier-s-Wife-by-Cindy-Lynn-Speer.pdf
    • http://muicuiu.dumb1.com/7a07a08a04a04a00/The-Diary-of-Jinky-Dog-of-a-Hollywood-Wife-by-Carole-Raphaelle-Davis.pdf
    • http://muicuiu.dumb1.com/2a00a09a02a09/The-Substitute-Wife-by-Barbara-McMahon.pdf
    • http://muicuiu.dumb1.com/4a06a09a07/Love-Alice-by-Barbara-Davis.pdf
    • http://muicuiu.dumb1.com/3a05a00a04a03a01/The-Secrets-She-Carried-by-Barbara-Davis.pdf
    • http://muicuiu.dumb1.com/2a01a01a05a02/Wanted-Wife-and-Mother-Sealed-with-a-Kiss-5-by-Barbara-McMahon.pdf
    • http://muicuiu.dumb1.com/4a09a07a03a02a07/All-We-Hold-Dear-Victorian-Trilogy-2-by-Kathryn-Lynn-Davis.pdf
    • http://muicuiu.dumb1.com/4a08a03a09a00a01/Sing-to-Me-of-Dreams-Dream-Suite-Book-1-by-Kathryn-Lynn-Davis.pdf
    • http://muicuiu.dumb1.com/2a08a00a03a05a03/The-Secret-Wife-by-Gill-Paul.pdf
    • http://muicuiu.dumb1.com/2a00a02a09a00a06/The-Secret-Wife-by-Lynne-Graham.pdf
    • http://muicuiu.dumb1.com/1a02a01a02a04/The-Secret-Wife-by-Carrie-Weaver.pdf
    • http://muicuiu.dumb1.com/2a00a01a02a01a05/The-Billionaire-s-Secret-Wife-The-Pryce-Family-3-by-Nadia-Lee.pdf
    • http://muicuiu.dumb1.com/8a04a07a02a09a07/The-Secret-Wife-Triple-Trouble-2-by-Susan-Mallery.pdf
    • http://muicuiu.dumb1.com/3a00a07a03a03a01/The-Rancher-s-Secret-Wife-Cooper-Creek-3-by-Brenda-Minton.pdf
    • http://muicuiu.dumb1.com/4a00a08a04a08a04/Daddy-s-Little-Secret-Pregnant-at-14-and-There-s-Only-One-Man-Who-Can-Be-the-Father-by-Tina-Davis.pdf
    • http://muicuiu.dumb1.com/2a00a07a02a08/The-Rags-To-Riches-Wife-The-Secret-Lives-of-Society-Wives-1-by-Metsy-Hingle.pdf
    • http://muicuiu.dumb1.com/4a08a03a09a00a01/Sing-to-Me-of-

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