Malicious PDF — malware analysis report

Static analysis result for SHA-256 18eecd59c5d40bbf…

MALICIOUS

PDF

18.9 KB Created: 2019-05-02 00:47:50 +01:00 Authoring application: mPDF 5.7 First seen: 2021-10-12
MD5: 8c043a3b0045023c17f641a52ee5d456 SHA-1: fb655f7229d70e01659784ac3fc37134c9f1dca0 SHA-256: 18eecd59c5d40bbf0171e1c46d7e709b653a241ec9bd99ecf6280bd4cd53a8f7
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, suggesting an attempt to direct users to external sites. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking these links. While no scripts were explicitly extracted, the ML classifier and link farm heuristic strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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/5a01a09a03a08a01/Colorado-Moon-by-Jim-Jones.pdf In PDF document text
    • http://muicuiu.dumb1.com/3a02a05a09a01a04/Colorado-State-of-Mind-Colorado-Springs-Fiction-Writers-Group-Anthology-3-by-Carrie-Vaughn.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a01a07a02a02a09a04/Coming-to-Colorado-Colorado-Heart-4-by-Sara-York.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a01a05a09a00a05/Colorado-Wild-Colorado-Heart-1-by-Sara-York.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a03a04a01a01a00/Colorado-Sunset-Peakview-Colorado-1-by-Jill-Haymaker.pdfIn PDF document text
    • http://muicuiu.dumb1.com/5a01a00a07a05a02/Rustler-s-Moon-by-Jim-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a05a08a09a08a02/The-Wolf-s-Moon-by-Patrick-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/2a02a05a02a07a00/Magic-of-Luvelles-Crystal-Moon-2-by-Phillip-E-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a07a08a00a00a07/Legend-Of-The-Lost-City-Chronicles-of-the-Moon-2-by-Allan-Frewin-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a07a07a09a04a02/Legend-of-the-Pharaoh-s-Tomb-Chronicles-of-the-Moon-1-by-Allan-Frewin-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a05a03a05a03a07/The-Jonestown-Massacre-The-Transcript-of-Reverend-Jim-Jones-Last-Speech-Guyana-1978-by-Jim-Jones.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a05a04a03a05a02/-orientalist-Jones-Sir-William-Jones-Poet-Lawyer-and-Linguist-1746-1794-by-Michael-J-Franklin.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a02a05a06a00/The-Taming-of-Billy-Jones-The-Jones-Gang-10-by-Christine-Rimmer.pdfIn PDF document text
    • http://muicuiu.dumb1.com/7a08a05a09a07a08/Moon-Shot-The-Inside-Story-of-America-s-Race-to-the-Moon-by-Alan-Shepard.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a02a08a01a02a00/Mrs-Darley-s-Moon-Mysteries-A-Celebration-Of-Moon-Lore-And-Magic-by-Carole-Carlton.pdfIn PDF document text
    • http://muicuiu.dumb1.com/9a06a02a01a02a09/Moon-O-Theism-Religion-of-a-War-and-Moon-God-Prophet-Volume-I-of-II-by-Yoel-Natan.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a08a08a05a03a06/Desert-Moon-The-Wolves-of-Twin-Moon-Ranch-1-by-Anna-Lowe.pdfIn PDF document text
    • http://muicuiu.dumb1.com/1a02a00a01a07a02/Blood-Moon-Dark-Moon-Series-Book-1-by-Shelly-M-Burrows.pdfIn PDF document text
    • http://muicuiu.dumb1.com/3a08a07a06a02a06/In-the-Light-of-the-Full-Cold-Moon-Moon-Sage-Theosophies-1-by-Susan-Elizabeth-Girard.pdfIn PDF document text
    • http://muicuiu.dumb1.com/6a04a04a01a08a02/The-Adventures-of-Tintin-Vol-5-Land-of-Black-Gold-Destination-Moon-Explorers-on-the-Moon-by-Herg-.pdfIn PDF document text

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