Malicious PDF — malware analysis report

Static analysis result for SHA-256 f107f467ef2e0ae1…

MALICIOUS

PDF

17.9 KB Created: 2019-05-02 01:32:52 +01:00 Authoring application: mPDF 5.7
MD5: 76ad0644a6a1a006d5249dbdfcd5ed75 SHA-1: f3f9caa42bab5fe2a0306502ec96889a3dcfe950 SHA-256: f107f467ef2e0ae1dac25a30d0cbe7ae029662103a8aadef9e580f54ca6506d3
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, forming a link farm. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of numerous external links. The document body, though heavily obfuscated, contains these URLs, suggesting the primary purpose is to redirect users to external content, likely malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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/2a08a07a04a02a09/The-Legend-of-Zelda-Four-Swords---Part-1-Zelda-6-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/1a04a04a01a03a01/The-Legend-of-Zelda-Four-Swords---Part-2-Zelda-7-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/1a04a04a01a07a06/The-Legend-of-Zelda-A-Link-to-the-Past-Zelda-9-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/2a08a07a01a03a08/The-Legend-of-Zelda-Oracle-of-Ages-Zelda-5-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/5a05a00a09a01/The-Legend-of-Zelda-The-Minish-Cap-Zelda-8-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/1a00a00a00a09a09a09/The-Legend-of-Zelda-Twilight-Princess-Vol-1-3-Collection-3-Books-Set-By-Akira-Himekawa-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/8a00a02a06a07a09/The-Legend-Of-Zelda-Tome-2-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/1a00a00a00a09a04a08/The-Legend-of-Zelda-Twilight-Princess-Vol-3-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/5a05a09a05a01a04/The-Legend-of-Zelda-Twilight-Princess-Vol-2-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/6a07a00a01a04/The-Legend-of-Zelda-Twilight-Princess-Vol-1-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/5a05a09a06a03a07/The-Legend-of-Zelda-Legendary-Edition-Vol-1-Ocarina-of-Time-Parts-1-amp-2-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/1a00a00a00a09a05a06/Zelda-T07-the-Minish-Cap-by-Akira-Himekawa.pdf
    • http://muicuiu.dumb1.com/5a05a09a05a06a00/The-Adventures-of-Zelda-The-Second-Saga-Zelda-2-by-Kristen-Otte.pdf
    • http://muicuiu.dumb1.com/5a05a09a04a08a06/The-Legend-of-Zelda-Encyclopedia-by-Nintendo.pdf
    • http://muicuiu.dumb1.com/4a01a03a00a00a05/The-Legend-of-Zelda-Boxed-Set-by-David-Hodgson.pdf
    • http://muicuiu.dumb1.com/2a06a08a07a08a09/The-Legend-of-Zelda-Forgotten-Goddess-by-N-Felts.pdf
    • http://muicuiu.dumb1.com/5a05a09a05a04a07/The-Legend-of-Zelda-and-Philosophy-I-Link-Therefore-I-Am-by-Luke-Cuddy.pdf
    • http://muicuiu.dumb1.com/2a02a03a02a05a03/Silent-Hero-A-Tribute-to-The-Legend-of-Zelda-by-Christine-E-Schulze.pdf
    • http://muicuiu.dumb1.com/5a05a09a05a06a02/Zelda-by-Zelda-D-39-Aprano.pdf
    • http://muicuiu.dumb1.com/1a06a02a08a02a01/Infernal-Choices-Part-One-BBW-Serial-Paranormal-Romance-Eliza-Black-Chronicles-Book-1-by-Abigail-Zelda-Alder.pdf
    • http://muicuiu.dumb1.com/6a07a00a01a04/The-Leg

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