Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad35decf7b5214f…

MALICIOUS

PDF

17.0 KB Created: 2019-05-05 16:10:52 +01:00 Authoring application: mPDF 5.7
MD5: 3148b6bf1811d5e08932b80e6e156993 SHA-1: 48f084eeaed2b449dd4d3742e36feb1a7ed5a454 SHA-256: 3ad35decf7b5214f036248b63da7525100b5fe7ea5604109edd71b48a1b6e373
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier as malicious. Static analysis revealed a large number of embedded external links, characteristic of a link farm or SEO poisoning attack. The document body contains numerous URLs pointing to PDF files, suggesting the primary intent is to redirect users to a potentially malicious collection of documents hosted on the 'muicuiu.dumb1.com' domain.

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/5a03a03a03a04a03/Cherry-Blossom-Girls-2-Cherry-Blossom-Girls-2-by-Harmon-Cooper.pdf
    • http://muicuiu.dumb1.com/4a07a02a04a00a03/Cherry-Blossom-Baseball-Cherry-Blossom-3-by-Jennifer-Maruno.pdf
    • http://muicuiu.dumb1.com/3a03a05a02a00a01/Socrates-Inspires-Cherry-to-Blossom-by-Red-Phoenix.pdf
    • http://muicuiu.dumb1.com/3a05a04a06a05a07/Cherry-Blossom-Moon-The-Anywhere-Ring-4-by-Louise-Ladd.pdf
    • http://muicuiu.dumb1.com/5a07a05a08a03a09/Blossom-Vs-The-Blasteroid-The-Powerpuff-Girls-Plus-You-Club-10-by-Scott-Westerfeld.pdf
    • http://muicuiu.dumb1.com/4a01a08a01a02a09/A-Love-Letter-from-the-Girls-Who-Feel-Everything-by-Brittainy-C-Cherry.pdf
    • http://muicuiu.dumb1.com/4a01a07a08a07/The-Shop-on-Blossom-Street-Blossom-Street-1-by-Debbie-Macomber.pdf
    • http://muicuiu.dumb1.com/8a01a05a09a09/Summer-on-Blossom-Street-Blossom-Street-6-by-Debbie-Macomber.pdf
    • http://muicuiu.dumb1.com/1a06a09a02a03a09/Blossom-Street-Brides-Blossom-Street-10-by-Debbie-Macomber.pdf
    • http://muicuiu.dumb1.com/4a02a05a04a05a08/Cherry-A-Life-of-Apsley-Cherry-Garrard-by-Sara-Wheeler.pdf
    • http://muicuiu.dumb1.com/2a00a00a03a06a03/Cherry-Christmas-Vampire-Cherry-3-5-by-Sotia-Lazu.pdf
    • http://muicuiu.dumb1.com/6a01a06a00a03a04/Cherry-Ames-Boarding-School-Nurse-Cherry-Ames-17-by-Helen-Wells.pdf
    • http://muicuiu.dumb1.com/1a08a00a06a06a06/Cherry-Ames-Visiting-Nurse-Cherry-Ames-8-by-Helen-Wells.pdf
    • http://muicuiu.dumb1.com/1a08a00a08a09a06/Cherry-Ames-Army-Nurse-Cherry-Ames-3-by-Helen-Wells.pdf
    • http://muicuiu.dumb1.com/1a08a00a05a06a06/Cherry-Ames-Chief-Nurse-Cherry-Ames-4-by-Helen-Wells.pdf
    • http://muicuiu.dumb1.com/1a08a00a06a06a09/Cherry-Ames-Flight-Nurse-Cherry-Ames-5-by-Helen-Wells.pdf
    • http://muicuiu.dumb1.com/3a08a05a05a06a04/Cherry-Ames-Jungle-Nurse-Cherry-Ames-25-by-Helen-Wells.pdf
    • http://muicuiu.dumb1.com/2a03a04a06a06a07/Cherry-Ames-Cruise-Nurse-Cherry-Ames-9-by-Helen-Wells.pdf
    • http://muicuiu.dumb1.com/4a05a01a06a05a04/Hana-Kimi-For-You-in-Full-Blossom-Vol-2-Hana-Kimi-For-You-in-Full-Blossom-2-by-Hisaya-Nakajo.pdf
    • http://muicuiu.dumb1.com/4a05a01a07a06a04/Hana-Kimi-For-You-in-Full-Blossom-Vol-3-Hana-Kimi-For-You-in-Full-Blossom-3-by-Hisaya-Nakajo.pdf

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