Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e929ecab8aecbcc…

MALICIOUS

PDF

13.6 KB Created: 2019-04-29 22:59:56 +01:00 Authoring application: mPDF 5.7 First seen: 2021-09-13
MD5: 9405aa0690ea6c640fea476a40604627 SHA-1: 831df10dda7616e5f46cd305b6a1ba0c98268bc2 SHA-256: 4e929ecab8aecbcc1a0872b8d0dfea0ceb3e55a24aa694541907aadb47c58dfd
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. While the document body is heavily corrupted, the presence of numerous links suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/7a03a06a01a04/Nearly-Found-Nearly-Gone-2-by-Elle-Cosimano.pdf In PDF document text
    • http://muicuiu.dumb1.com/7a00a01a03a08a06/Found-Arielle-Lockley-3-by-Elle-Field.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a06a08a09a07a08/Lost-and-Found-Love-in-New-York-1-by-Elle-Casey.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a07a02a00a06a03/Found-at-the-Library-Found-1-by-Christi-Snow.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a03a03a02a04a01/Weaving-Wyrd-The-Poetry-and-Thoughts-of-Elle-Mort-by-Elle-Mort.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a02a09a02a09a05/Found-by-You-Found-by-You-1-by-Victoria-H-Smith.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a08a03a00a06a09/He-Found-Me-He-Found-Me-1-by-Whitney-Barbetti.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a05a03a03a02a03/Principia-Discordia-Or-quot-How-I-Found-Goddess-and-What-I-Did-to-Her-When-I-Found-Her-quot-by-Gregory-Hill.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a09a05a01a08a09/Lost-and-Found-Pieces-Lost-and-Found-5-2-by-J-M-Madden.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a05a05a03a05a08/Anywhere-With-You-by-Christina-Elle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a01a06a00a03a07/Wherever-You-Are-by-Elle-Wright.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a03a00a05a03/On-Her-Six-Under-Covers-1-by-Christina-Elle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a06a06a04a08a06/Top-Brass-by-Elle-Marlow.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a07a03a00a03a06/After-the-Fall-War-of-the-Fae-5-by-Elle-Casey.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a01a09a08a09a09/By-Degrees-by-Elle-Casey.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a03a08a09a02a04/Elle-savait-by-Lee-Child.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a02a05a01a07a04/The-Fling-by-Elle-J-Lawson.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a00a06a01a08a03/Two-Rivals-by-Elle-Everton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a06a07a05a06a07/The-Pin-Up-Artist-by-Elle-Marlow.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a02a05a06a00a06/Elle-by-Harriet-Lane.pdfIn PDF document text

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