Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa8936cdd00fda99…

MALICIOUS

PDF

17.1 KB Created: 2019-05-24 13:47:47 +01:00 Authoring application: mPDF 5.7
MD5: e9cdfcffdc475f1e1b0d0956eb9abf2d SHA-1: 74d51b3d498b66e778e2ccdbd4344ba4ef84516f SHA-256: fa8936cdd00fda991c1649b015097af08facd15fcb8ca2482e8d690514e828cf
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier strongly indicated maliciousness. While no scripts were extracted, the heuristic 'PDF_SEO_LINK_FARM' suggests the primary attack pattern is to redirect users to a large number of external resources hosted on the suspicious domain 'cefasfese.4pu.com'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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://cefasfese.4pu.com/6734736734739/The-Dark-Hunters-Vol-1-Dark-Hunter-Manga-1-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/1734737737734737/The-Dark-Hunters-Vol-2-Dark-Hunter-Manga-2-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/3732737736731731/The-Dark-Hunters-Infinity-Vol-1-Chronicles-of-Nick-Manga-1-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/3730731731731735/Dark-Bites-Dream-Hunter-1-Hellchaser-1-Were-Hunter-1-Dark-Hunter-2-5-2-6-7-5-9-5-9-6-10-5-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/1738731735737734/The-Dark-Hunter-Companion-Dark-Hunter-Universe-13-5-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/3734739735737/Dark-Side-of-the-Moon-Dark-Hunter-9-Were-Hunter-3-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/1733735731738735/Redemption-Dark-Hunter-20-5-Dream-Hunter-5-5-Were-Hunter-6-5-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/1739732731736737/Upon-the-Midnight-Clear-Dark-Hunter-12-Dream-Hunter-2-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/3735731733730/Bad-Moon-Rising-Dark-Hunter-17-Were-Hunter-4-Hellchaser-1-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/4730734736730/Time-Untime-Dark-Hunter-21-Hellchaser-4-Were-Hunter-7-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/3734737735736735/Devil-May-Cry-Dark-Hunter-11-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/1732732730731731/Styxx-Dark-Hunter-23-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/3733731737734737/Dance-with-the-Devil-Dark-Hunter-4-Were-Hunter-2-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/2735739738737730/Retribution-Dark-Hunter-16-Were-Hunter-8-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/4733730735735737/No-Mercy-Dark-Hunter-19-Were-Hunter-6-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/6730737733739/No-Mercy-Dark-Hunter-18-Were-Hunter-5-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/4731731739737731/Night-Embrace-Dark-Hunter-2-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/3735736731739/One-Silent-Night-Dark-Hunter-15-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/1731736734735733/Seize-the-Night-Dark-Hunter-5-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/4739733730739732/Night-Pleasures-Dark-Hunter-1-by-Sherrilyn-Kenyon.pdf
    • http://cefasfese.4pu.com/3735731733730

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