Malicious PDF — malware analysis report

Static analysis result for SHA-256 5031ef476df00430…

MALICIOUS

PDF

17.9 KB Created: 2019-04-30 04:54:50 +01:00 Authoring application: mPDF 5.7
MD5: 826b242f9b1d5be2cdae3b04f3bf19ff SHA-1: 40f2d44b2281fe30e893fc537fb968584893d12f SHA-256: 5031ef476df0043013b8a41e2a223a26bf98e9941caab02245d92a57b688086c
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a link farm or SEO poisoning attack. While the specific URLs extracted were classified as benign, the sheer volume and the nature of the heuristic suggest a malicious intent to manipulate search results or redirect users to potentially harmful content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

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://muicuiu.dumb1.com/1a01a08a07a06a04a09/Die-Furcht-an-sich-Star-Trek-Discovery-3-by-James-Swallow.pdf
    • http://muicuiu.dumb1.com/4a03a05a02a02a03/Desperate-Hours-Star-Trek-Discovery-1-by-David-Mack.pdf
    • http://muicuiu.dumb1.com/3a06a03a00a04a05/Star-Trek-III-The-Search-for-Spock-Star-Trek-TOS-Movie-Novelizations-3-by-Vonda-N-McIntyre.pdf
    • http://muicuiu.dumb1.com/8a04a03a06a05a01/Star-Trek-VI-The-Undiscovered-Country-Star-Trek-TOS-Movie-Novelizations-6-by-J-M-Dillard.pdf
    • http://muicuiu.dumb1.com/2a00a09a09a05a05/Star-Trek-V-The-Final-Frontier-Star-Trek-TOS-Movie-Novelizations-5-by-J-M-Dillard.pdf
    • http://muicuiu.dumb1.com/1a00a02a01a08a01a00/Star-Trek-Log-Seven-Star-Trek-Logs-7-by-Alan-Dean-Foster.pdf
    • http://muicuiu.dumb1.com/1a00a02a01a05a07a05/Star-Trek-Log-One-Star-Trek-Logs-1-by-Alan-Dean-Foster.pdf
    • http://muicuiu.dumb1.com/2a03a07a03a02a00/Star-Trek-4-by-James-Blish.pdf
    • http://muicuiu.dumb1.com/2a02a03a04a02a01/Spock-Must-Die-Star-Trek-Adventures-1-by-James-Blish.pdf
    • http://muicuiu.dumb1.com/8a04a03a09a00a04/Star-Trek-Federation-Passport-A-Mini-Travel-Guide-and-Star-Trek-Passport-by-J-M-Dillard.pdf
    • http://muicuiu.dumb1.com/8a06a02a06a08a09/Star-Trek-Die-n-chste-Generation---berlebende-Star-Trek-The-Next-Generation-4-by-Jean-Lorrah.pdf
    • http://muicuiu.dumb1.com/2a03a00a00a04a09/Swallow-Me-Whole-by-Gemma-James.pdf
    • http://muicuiu.dumb1.com/3a06a06a04a01a05/Doctor-Who-Peacemaker-by-James-Swallow.pdf
    • http://muicuiu.dumb1.com/8a04a00a03a04a05/24-Deadline-24-Live-Another-Day-1-by-James-Swallow.pdf
    • http://muicuiu.dumb1.com/5a00a02a05a06/The-Butterfly-Effect-by-James-Swallow.pdf
    • http://muicuiu.dumb1.com/1a00a02a01a07a03a00/The-World-of-Star-Trek-by-David-Gerrold.pdf
    • http://muicuiu.dumb1.com/8a08a06a01a01/The-Metaphysics-of-Star-Trek-by-Richard-Hanley.pdf
    • http://muicuiu.dumb1.com/2a01a00a01a00a03/Star-Trek-by-Alan-Dean-Foster.pdf
    • http://muicuiu.dumb1.com/4a06a05a02a09a06/Cybersong-Star-Trek-Voyager-8-by-S-N-Lewitt.pdf
    • http://muicuiu.dumb1.com/2a04a04a06a06a05/Battlestations-Star-Trek-31-by-Diane-Carey.pdf
    • http://muicuiu.dumb1.com/1a00a02a01a08a01a00/Star-Trek-Log-

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