Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c64bb772f2cfb45…

MALICIOUS

PDF

18.3 KB Created: 2019-05-02 16:41:58 +01:00 Authoring application: mPDF 5.7
MD5: f38b4c14d21f148ff004b8ac1d54aa42 SHA-1: ef0e2b08895c43806f9028f3a7e32b38d73d775e SHA-256: 3c64bb772f2cfb458d680b43de79cbe23d30f373e665e9c44cbbb4fb3440045e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection tactic. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the document. The embedded URLs, while individually marked as benign, collectively form the basis of the attack pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://seasasac.lflinkup.com/9da4da2da2da2/Acheron-Dark-Hunter-8-Entire-Dark-Hunterverse-15-Dark-Hunterverse-23-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/5da0da4da3da8da3/House-of-the-Rising-Son-Dark-Hunter-22-5-The-Entire-Dark-Hunterverse-28-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/4da0da5da3da5da9/The-Simi-s-ABCs-Adventures-with-Dark-Hunters-Dark-Hunter-30-Dark-Hunterverse-31-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/4da0da3da1da2da6/Winter-Born-Were-Hunter-1-5-Dark-Hunterverse-6-5-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/3da2da5da2da0/Acheron-Dark-Hunter-14-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/1da4da7da7da4da7/The-Dark-Hunters-Vol-2-Dark-Hunter-Manga-2-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/3da4da9da5da7/Dark-Side-of-the-Moon-Dark-Hunter-9-Were-Hunter-3-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/1da4da5da1da1da9/A-Dark-Hunter-Christmas-Dark-Hunter-3-6-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/3da0da1da1da1da6/Styxx-Dark-Hunter-23-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/1da4da8da9da7da5/Second-Chances-Dark-Hunter-7-5-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/4da7da8da4da2da7/Styxx-Dark-Hunter-22-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/4da7da5da0da9/Styxx-Dark-Hunter-23-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/1da4da8da6da8da7/Styxx-Dark-Hunter-23-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/3da8da9da4da3/The-Guardian-Dark-Hunter-20-Dream-Hunter-5-Were-Hunter-6-Hellchaser-3-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/3da0da5da0da3da0/Seize-the-Night-Dark-Hunter-7-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/4da4da5da8da5da2/Sins-of-the-Night-Dark-Hunter-8-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/1da8da1da5da4da6/Seize-the-Night-Dark-Hunter-6-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/3da4da4da0da3/Seize-the-Night-Dark-Hunter-6-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/3da2da2da6da0da3/Night-Embrace-Dark-Hunter-3-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/4da0da2da9da2da8/Bad-Moon-Rising-Dark-Hunter-14-Were-Hunter-6-Hellchaser-3-by-Sherrilyn-Kenyon.pdf
    • http://seasasac.lflinkup.com/1da4da5da1

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