Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc76fd2c1a0f3f13…

MALICIOUS

PDF

16.2 KB Created: 2019-04-30 08:27:12 +01:00 Authoring application: mPDF 5.7 First seen: 2021-11-21
MD5: 3469e6c369bdee4df6dce78953e61da2 SHA-1: 9930246fd2e57eba60f6410a81a18a26360e88da SHA-256: bc76fd2c1a0f3f1374086663437efc3c1f0aaf2f3313a17cd3fdc53c29cd23c1
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. While the ML classifier strongly indicates maliciousness, the specific intent beyond link farming is unclear due to the lack of executable scripts or clear textual lures. The embedded links are likely intended to redirect users to malicious sites or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9898

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/2a01a04a06a04/The-Black-Count-Glory-Revolution-Betrayal-and-the-Real-Count-of-Monte-Cristo-by-Tom-Reiss.pdf In PDF document text
    • http://muicuiu.dumb1.com/7a01a06a03a09/Le-Comte-De-Monte-Cristo-3-The-Count-of-Monte-Cristo-part-3-of-3-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a07a02a06a06a04/O-Conde-de-Monte-Cristo-V-3-The-Count-of-Monte-Cristo-part-3-of-3-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a07a02a07a03a00/Grof-Monte-Kristo-II-The-Count-Of-Monte-Cristo-part-2-of-3-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a08a05a06a01a05/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a06a01a07a04a02/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a01a09a09a09a06/The-Count-Of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a05a01a01a01a02/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a02a02a09/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a07a02a06a06a00/The-Count-of-Monte-Cristo-by-Stephen-Feinstein.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a02a05a07a05a04/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a02a05a08a00a09/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a03a05a06a03a08/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a09a00a09a01a06/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a05a01a03a01a01/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a01a09a00a09a08/The-Count-of-Monte-Cristo-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a01a01a03a03a06/The-Count-of-Monte-Cristo-Part-Three-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a07a02a06a07a08/Gankutsuou-1-The-Count-of-Monte-Cristo-by-Yura-Ariwara.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a03a02a05a03a08/The-Count-of-Monte-Cristo-Illustrated-by-Alexandre-Dumas.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a00a03a07a02a08/The-Count-of-Monte-Cristo-Wild-and-Wanton-3-by-Monica-Corwin.pdfIn PDF document text

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