Malicious PDF — malware analysis report

Static analysis result for SHA-256 880d155598c97e87…

MALICIOUS

PDF

20.8 KB Created: 2019-05-02 00:16:51 +01:00 Authoring application: mPDF 5.7
MD5: a886569a013a84e2e16d230c2db8717c SHA-1: 082ffcb43b6304c88b10f753c30f20d87bffde42 SHA-256: 880d155598c97e87993f9bf70bcbbf1d791432ea31e82cfaf8c4176293e5784d
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified as a link farm. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the structure and heuristic firings suggest the primary purpose is to redirect users to external resources, potentially for malicious purposes such as distributing further malware or engaging in phishing. The URLs themselves are currently marked as benign, but the overall pattern is suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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/7a02a04a02a09a08/THE-LION-THE-WITCH-AND-THE-WARDROBE-THE-CHRONICLES-OF-NARNIA-Tome-1-THE-CHRONICLES-OF-NARNIA-1-7-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/1a02a04a04a06a05/The-Lion-the-Witch-and-the-Wardrobe-Chronicles-of-Narnia-2-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/7a08a02a04a05/The-Lion-the-Witch-and-the-Wardrobe-The-Chronicles-of-Narnia-1-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/7a02a09a00a00/The-Lion-the-Witch-and-the-Wardrobe-The-Chronicles-of-Narnia-1-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/2a05a01a05a02/The-Lion-the-Witch-and-the-Wardrobe-Chronicles-of-Narnia-1-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/8a06a00a04a01/The-Lion-the-Witch-and-the-Wardrobe-Chronicles-of-Narnia-2-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/8a09a03a08a03a01/The-Lion-the-Witch-and-the-Wardrobe-The-Chronicles-of-Narnia-Chronological-Order-2-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/7a03a01a09a01a07/The-Lion-The-Witch-amp-The-Wardrobe-Student-Packet-Grades-3-4-The-Chronicles-Of-Narnia-Series-1-The-Chronicles-Of-Narnia-Series-Book-1-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/8a07a00a04a02/Piano-Vocal-Guitar-Sheet-Music-The-Chronicles-of-Narnia-The-Lion-the-Witch-and-The-Wardrobe-by-Harry-Gregson-Williams.pdf
    • http://muicuiu.dumb1.com/8a08a03a02a00a09/The-Lion-the-Witch-and-the-Wardrobe-The-Creatures-of-Narnia-by-Scout-Driggs.pdf
    • http://muicuiu.dumb1.com/3a02a08a07a03a07/The-Lion-the-Witch-and-the-Wardrobe-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/4a06a09a07a03/The-Lion-the-Witch-and-the-Wardrobe-The-Magician-s-Nephew-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/8a08a03a02a00a07/Through-the-Wardrobe-Your-Favorite-Authors-on-C-S-Lewis-s-Chronicles-of-Narnia-by-Herbie-Brennan.pdf
    • http://muicuiu.dumb1.com/8a08a03a01a00a02/The-Chronicles-of-Narnia-The-Silver-Chair-Literature-Unit-Study-C-S-Lewis-Narnia-by-Teresa-Lilly.pdf
    • http://muicuiu.dumb1.com/5a07a00a05a02a01/H-sten-och-hans-pojke-Narnia-3-Chronicles-of-Narnia-3-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/5a02a09a02a07/The-Chronicles-of-Narnia-The-Chronicles-of-Narnia-1-7-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/5a06a08a00a03a06/The-Chronicles-of-Narnia-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/3a01a09a09a04a02/The-Chronicles-of-Narnia-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/4a01a01a09a03a05/The-Complete-Chronicles-of-Narnia-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/8a08a03a02a01a00/The-Complete-Chronicles-of-Narnia-by-C-S-Lewis.pdf
    • http://muicuiu.dumb1.com/7a03a01

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