Malicious PDF — malware analysis report

Static analysis result for SHA-256 234a672c03df7160…

MALICIOUS

PDF

12.9 KB Created: 2020-03-18 21:06:53 +00:00 Authoring application: mPDF 5.7
MD5: 0381d7861bd6b10b35abf5d17e7313e5 SHA-1: e2453278c38959cd4af6084f88937c673a9b93bc SHA-256: 234a672c03df7160b1769576965a258e6929b4c7c3484396ef79efe81ac36d11
90 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded links pointing to external PDF files, a technique often used for SEO poisoning or distributing malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, but the embedded URLs suggest a drive-by download or redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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://eascasas.myhome.cx/5aa3aa6aa1aa8/City-of-Night-Dean-Koontz-s-Frankenstein-2-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/2aa6aa1aa2aa4aa4/City-of-Night-Dean-Koontz-s-Frankenstein-2-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa9aa0aa1aa1aa5/City-of-Night-Dean-Koontz-s-Frankenstein-2-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/1aa5aa5aa9aa0aa3/City-of-Night-Dean-Koontz-s-Frankenstein-2-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/4aa2aa9aa0aa2/Dead-and-Alive-Dean-Koontz-s-Frankenstein-3-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa9aa0aa1aa1aa3/Dead-and-Alive-Dean-Koontz-s-Frankenstein-3-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/1aa3aa0aa4aa3aa1/The-Dead-Town-Dean-Koontz-s-Frankenstein-5-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa0aa4aa6aa2aa9/Lost-Souls-Dean-Koontz-s-Frankenstein-4-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/9aa3aa7aa2aa0aa6/Dean-Koontz-Omnibus-Hideaway-The-Vision-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa5aa3aa5aa6aa3/The-Neighbor-The-City-0-5-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/2aa7aa2aa7aa3aa4/Darkness-Under-the-Sun-What-the-Night-Knows-0-5-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa2aa1aa6aa1aa0/The-Night-Window-Jane-Hawk-5-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/2aa3aa4aa2aa4aa8/What-the-Night-Knows-What-the-Night-Knows-1-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/2aa7aa5aa4aa8aa3/The-Bad-Place-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa5aa0aa5aa6aa3/Whispers-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa2aa6aa4aa8/Watchers-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/2aa4aa5aa7aa0aa9/Intensity-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa8aa7aa1aa9/Whispers-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/2aa6aa3aa8aa8/Strangers-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/4aa8aa3aa6aa9aa0/Darkfall-by-Dean-Koontz.pdf
    • http://eascasas.myhome.cx/3aa2aa1aa6aa1aa0/The-Night-Window-Jane-Hawk-5-by-Dean-Koontz

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