Malicious PDF — malware analysis report

Static analysis result for SHA-256 779a59a79774df40…

MALICIOUS

PDF

20.2 KB Created: 2019-04-30 02:50:17 +01:00 Authoring application: mPDF 5.7 First seen: 2021-10-14
MD5: 89710d6bd3d77a773f0233e6ff78a367 SHA-1: 77867a4a56825e19627be66c419eb93ddeb3b934 SHA-256: 779a59a79774df40409f469d795f111bc984998d3fdc7adae23064c020935795
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm, which is a common technique for distributing malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the structure suggests an attempt to trick users into downloading further payloads via the provided links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/4a09a01a02a06a02/A-Study-in-Scarlet-and-The-Sign-of-the-Four-by-Arthur-Conan-Doyle.pdf In PDF document text
    • http://muicuiu.dumb1.com/7a05a01a01a09a06/A-Study-in-Scarlet-amp-The-Sign-of-the-Four-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a08a01a02a02a02/A-Study-in-Scarlet-and-The-Sign-of-Four-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a00a02a04a05a01/A-Study-in-Scarlet-Illustrated-by-Nis-Jessen-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a04a00a01a09/A-Study-in-Scarlet-The-Hound-of-the-Baskervilles-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a05a04a04a02a05/A-study-in-scarlet-With-a-note-on-Sherlock-Holmes-by-Joseph-Bell-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a07a06a00a08a05/A-study-in-scarlet-Eine-Studie-in-Scharlachrot-Sherlock-Holmes-ermittelt-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a02a05a02a03a07/A-Study-In-Scarlet-Parallel-Text-English-French-Edition-Un-Crime-trange-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a04a08a01a09a09/A-Study-in-Scarlet-GCSE-English-Illustrated-Student-Edition-with-Wide-Annotation-Friendly-Margins-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a08a05a02a05a08/The-Adventures-of-Sherlock-Holmes-by-Sir-Arthur-Conan-Doyle-Illustrated-Delphi-Parts-Edition-Sir-Arthur-Conan-Doyle-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a05a06a09a05a00/A-Study-in-Scarlet-Introducing-Sherlock-Holmes-The-Sherlock-Holmes-Collection-Volume-1-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a02a02a01a02a07/Sir-Arthur-Conan-Doyle-s-The-Adventures-of-Sherlock-Holmes-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a08a05a06a04a09/The-Exploits-of-Brigadier-Gerard-by-Arthur-Conan-Doyle-and-W-B-Wollen-amp-the-Adventures-of-Gerard-Illustrated-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a03a02a04a00a02/Arthur-Conan-Doyle-quot-Die-verlorene-Welt-quot-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a05a04a04a09a08/Doyle---Sherlock-Holmes---Gesammelte-Werke-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a02a08a02a09/The-Sign-of-Four-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a00a01a05a02a04/The-Sign-of-the-Four-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a00a04a09a06a03a03/The-Sign-of-the-Four-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/4a05a00a09a08a08/The-Man-With-the-Twisted-Lip-by-Arthur-Conan-Doyle.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a08a01a05a09a09/The-Sign-of-the-Four-by-Arthur-Conan-Doyle.pdfIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.