Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d2f34ac987e16c…

MALICIOUS

PDF

16.8 KB Created: 2019-05-02 00:41:16 +01:00 Authoring application: mPDF 5.7
MD5: 0301f1b3bb7e7424fc2d8819a20caa57 SHA-1: 8b5f562e20f71288ce504a05c7c120ff2b3e1f0d SHA-256: 75d2f34ac987e16ce3fca8ac53fef35620d6ddf3de4134528fab91c72f5e885e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which suggests a link farm or SEO poisoning attack. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the document body contains numerous URLs pointing to external content, likely intended to redirect the user to malicious sites or download further payloads. The primary attack pattern involves leveraging a large number of links to obscure the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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/3a03a06a01a05/Trickster-s-Choice-Daughter-of-the-Lioness-1-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/4a00a05a06a04a00/Trickster-s-Choice-Daughter-of-the-Lioness-1-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/1a07a06a01a03a03/Trickster-s-Choice-Daughter-of-the-Lioness-1-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/6a06a06a06/Trickster-s-Choice-Daughter-of-the-Lioness-1-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/4a00a04a01a05a09/Trickster-s-Queen-Daughter-of-the-Lioness-2-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/3a03a05a01a06/Trickster-s-Queen-Daughter-of-the-Lioness-2-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/4a08a06a04a03/Tricksters-Daughter-of-the-Lioness-1-2-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/1a01a06a08a08a01a00/A-Study-Guide-for-Tamora-Pierce-s-quot-Trickster-s-choice-quot-by-Cengage-Learning-Gale.pdf
    • http://muicuiu.dumb1.com/1a09a06a00a06a04/Lioness-Rampant-Song-of-the-Lioness-4-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/3a00a00a01a05a07/Lioness-Rampant-Song-of-the-Lioness-4-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/1a01a06a08a07a02a05/Novels-by-Tamora-Pierce-Study-Guide-Emelanese-Books-Tortallan-Books-Daughter-of-the-Lioness-the-Will-of-the-Empress-by-Books-LLC.pdf
    • http://muicuiu.dumb1.com/4a03a09a07a05a06/The-Song-of-the-Lioness-Quartet-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/3a01a06a09a06a06/Alanna-The-First-Adventure-Song-of-the-Lioness-1-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/3a04a01a01a01/In-the-Hand-of-the-Goddess-Song-of-the-Lioness-2-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/3a04a02a02a05/The-Woman-Who-Rides-Like-a-Man-Song-of-the-Lioness-3-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/8a06a08a01a00/The-Woman-Who-Rides-Like-a-Man-Song-of-the-Lioness-3-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/5a05a05a00a04a00/A-Can-o-de-Alanna-A-Primeira-Grande-Aventura-Song-of-the-Lioness-1-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/3a02a05a07a02a05/The-Immortals-Box-Set-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/3a03a00a08a01a09/Wild-Magic-by-Tamora-Pierce.pdf
    • http://muicuiu.dumb1.com/1a01a02a01a08a00/Tamora-Pierce-by-Frederic-P-Miller.pdf
    • http://muicuiu.dumb1.com/1a01a06a08a07a02a05/Novels-by-Tamora-Pierce-Study-Guide

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