Malicious PDF — malware analysis report

Static analysis result for SHA-256 8080f6f48af3da5c…

MALICIOUS

PDF

19.8 KB Created: 2019-04-30 04:50:20 +01:00 Authoring application: mPDF 5.7
MD5: 71f72ef8425ed4b941905907cbb8e17f SHA-1: 0162dcb215254e6623deb0200e12b66fc4e0714b SHA-256: 8080f6f48af3da5ce33a2550ef89fb28623a550cf8de0001f47f96af8d54dae6
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to drive traffic to malicious sites. The ML classifier also flagged this document as malicious. While the linked URLs themselves are currently marked as benign, the sheer volume and the suspicious domain suggest a malicious intent to redirect users. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/5a06a09a00a04a01/Jerome-K-Jerome-Collected-Works-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/5a06a09a00a04a06/Humorous-World-of-Jerome-K-Jerome-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/9a03a00a09a06a05/Drei-Mann-in-einem-Boot-vom-Hunde-ganz-zu-schweigen-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/8a06a05a04a03a06/Drei-Mann-in-einem-Boot-Ganz-zu-schweigen-vom-Hund-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/6a00a01a05a06a08/Three-Men-in-a-Boat-To-Say-Nothing-of-the-Dog-New-Illustrated-Edition-with-67-Original-Drawings-by-A-Frederics-a-Detailed-Map-of-Tour-and-a-Photo-of-the-Three-Men-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/5a05a04a01a04a05/Tres-hombres-en-una-barca-por-no-mencionar-al-perro-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/7a03a02a04a04a04/The-Soul-of-Nicholas-Snyders-Or-the-Miser-of-Zandam-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/5a02a07a00a05a00/Trois-hommes-dans-un-bateau-Annot-Livre-bilingue-Apprendre-l-anglais-en-lisant-Book-18-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/1a01a02a06a06a05a00/Three-Men-in-a-Boat-To-Say-Nothing-of-the-Dog-Illustrated-1889-edition-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/6a02a09a05a03a04/Trois-hommes-dans-un-bateau-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/5a02a08a08a00a01/Trois-Hommes-Dans-Un-Bateau-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/5a06a09a00a03a00/Second-Thoughts-Of-An-Idle-Fellow-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/8a02a02a03a08a03/Idle-Thoughts-of-an-Idle-Fellow-A-Humourous-Take-on-Mundane-Topics-Aziloth-Books-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/1a00a09a01a04a04a02/Tre-uomini-in-barca-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/4a06a09a06a08a00/Three-Men-in-a-Boat-To-Say-Nothing-of-the-Dog-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/4a04a00a01a09a03/Three-Men-in-a-Boat-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/7a02a07a03a02/Three-Men-In-A-Boat-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/9a09a03a07a03a03/Tommy-amp-Co-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/5a09a08a04a07a00/Three-Men-in-a-Boat-by-Jerome-K-Jerome.pdf
    • http://muicuiu.dumb1.com/7a00a02a00a03a04/Into-the-Light-The-Photography-of-J-r-me-Brunet-by-J-r-me-Brunet.pdf
    • http://muicuiu.dumb1.com/5a05a04a01a04a05

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