Malicious PDF — malware analysis report

Static analysis result for SHA-256 3adfca7714d5990a…

MALICIOUS

PDF

15.8 KB Created: 2019-04-30 05:59:14 +01:00 Authoring application: mPDF 5.7
MD5: 3b21fc016428b61f754cc13eee908c66 SHA-1: 281890ec37ef631d2c5358ab6e1efd5525a34e43 SHA-256: 3adfca7714d5990aa966824e61f15919653fd0b046ce9cc0d0518f5b6ba914f9
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While the specific URLs extracted are currently marked as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO poisoning or to distribute further malicious content. The ML_NYX_PDF_MALICIOUS heuristic also strongly indicates maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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/1a06a05a09a00a07/Six-Months-to-Doctor-How-to-Complete-a-Dissertation-in-Six-Months-by-Judi-Cin-as.pdf
    • http://muicuiu.dumb1.com/7a09a01a05a09a06/Figures-of-Speech-or-Figures-of-Thought-The-Traditional-View-of-Art-Revised-Edition-with-Previously-Author-s-Unpublished-Notes-by-Ananda-K-Coomaraswamy.pdf
    • http://muicuiu.dumb1.com/3a04a01a07a02a09/18-Months-by-Samantha-Boyette.pdf
    • http://muicuiu.dumb1.com/1a07a07a04a02a04/Six-Months-Seven-2-by-Dannika-Dark.pdf
    • http://muicuiu.dumb1.com/2a02a06a05a05a03/Twelve-Months-by-R-Gadd.pdf
    • http://muicuiu.dumb1.com/2a07a04a00a05a02/Nine-Months-by-Paula-Bomer.pdf
    • http://muicuiu.dumb1.com/4a03a03a08a02a07/Three-Months-in-Florence-by-Mary-Carter.pdf
    • http://muicuiu.dumb1.com/2a05a01a07a09/Nine-Months-to-Redeem-Him-by-Jennie-Lucas.pdf
    • http://muicuiu.dumb1.com/5a04a01a09a01a01/Misha-and-the-Months-by-Erzebet-YellowBoy.pdf
    • http://muicuiu.dumb1.com/7a05a03a07a02a08/Six-Figures-by-Fred-G-Leebron.pdf
    • http://muicuiu.dumb1.com/1a05a06a01a03/Asian-Figures-by-W-S-Merwin.pdf
    • http://muicuiu.dumb1.com/4a05a08a04a04a00/The-Lichtenberg-Figures-by-Ben-Lerner.pdf
    • http://muicuiu.dumb1.com/7a04a04a06a04a08/Six-Months-Among-the-Malays-and-a-Year-in-China-by-Yvan.pdf
    • http://muicuiu.dumb1.com/2a02a01a06a06a05/Six-Months-Three-Days-by-Charlie-Jane-Anders.pdf
    • http://muicuiu.dumb1.com/1a05a09a06a05a09/Eight-Months-on-Ghazzah-Street-by-Hilary-Mantel.pdf
    • http://muicuiu.dumb1.com/6a09a00a00a05/The-Last-Seven-Months-of-Anne-Frank-by-Willy-Lindwer.pdf
    • http://muicuiu.dumb1.com/9a04a04a00a06a00/Spot-12-Five-Months-in-the-Neonatal-ICU-by-Jenny-Jaeckel.pdf
    • http://muicuiu.dumb1.com/7a05a03a09a06a08/Gospel-Figures-in-Art-by-Stefano-Zuffi.pdf
    • http://muicuiu.dumb1.com/7a05a03a09a02a06/Public-Figures-by-Jena-Osman.pdf
    • http://muicuiu.dumb1.com/3a07a01a00a07/Figures-in-a-Landscape-by-Barry-England.pdf
    • http://muicuiu.dumb1.com/5a04a01a09a01a01/Misha-and-the-Months-by-Erzebet-Yel

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