Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccccd110d516751e…

MALICIOUS

PDF

17.7 KB Created: 2019-04-30 02:07:02 +01:00 Authoring application: mPDF 5.7
MD5: 0985e0e607a82cca866ffbb994ccd1d9 SHA-1: 08803f0d7cdfe5a039942907ff0b498cd7d37e2c SHA-256: ccccd110d516751ef5f38a7e7f6b4068467b84c912f06dee0bb309e7b2dcbe1f
90 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains a large number of embedded links, identified as a 'PDF_SEO_LINK_FARM'. While the document body is unreadable, the heuristic suggests the primary function is to host a link farm. The links themselves point to what appear to be book PDFs, but the sheer volume and the heuristic's classification indicate a malicious intent, likely for SEO manipulation or to distribute further payloads. No scripts were extracted from this sample.

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://muicuiu.dumb1.com/2a05a00a08a03a01/The-Trial-and-Death-of-Socrates-by-Plato.pdf
    • http://muicuiu.dumb1.com/3a03a08a05a06/The-Trial-and-Death-of-Socrates-Euthyphro-Apology-Crito-Phaedo-by-Plato.pdf
    • http://muicuiu.dumb1.com/5a08a07a05a02a01/The-Last-Days-of-Socrates-by-Plato.pdf
    • http://muicuiu.dumb1.com/4a09a01a02a01a06/The-Last-Days-of-Socrates-by-Plato.pdf
    • http://muicuiu.dumb1.com/8a03a04a07a08/The-Last-Days-of-Socrates-Crito-by-Plato.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a02a00a09/Apology-Also-Known-As-the-Death-of-Socrates-by-Plato.pdf
    • http://muicuiu.dumb1.com/1a08a02a07a04a09/The-Trial-of-Socrates-by-I-F-Stone.pdf
    • http://muicuiu.dumb1.com/1a05a00a01a03/The-Collaborator-The-Trial-and-Execution-of-Robert-Brasillach-by-Alice-Kaplan.pdf
    • http://muicuiu.dumb1.com/8a04a01a07a09a03/A-Coffin-for-King-Charles-The-Trial-and-Execution-of-Charles-I-by-C-V-Wedgwood.pdf
    • http://muicuiu.dumb1.com/7a01a09a05a05a03/Three-New-Olympus-Gods-and-Their-Universe-Socrates-Plato-and-Aristotle-on-Mt-Olympus-Explore-the-Nature-and-Evolution-of-the-Universe-Based-on-Our-21st-Century-Knowledge-by-Stephen-R-Champi.pdf
    • http://muicuiu.dumb1.com/5a08a07a04a06a07/The-Atlantis-Dialogue-Plato-s-Original-Story-of-the-Lost-City-and-Continent-by-Plato.pdf
    • http://muicuiu.dumb1.com/5a05a01a00a04a01/The-Republic-By-Plato-Illustrated---Original-amp-Unabridged-Free-Audiobook-Inside-by-Plato.pdf
    • http://muicuiu.dumb1.com/8a07a00a01a06a07/The-Gorgias-of-Plato-Chiefly-According-to-Stallbaum-s-Text-With-Notes-by-Plato.pdf
    • http://muicuiu.dumb1.com/3a09a06a07a04a05/Plato-s-Dialogue-on-Friendship-An-Interpretation-of-the-Lysis-by-Plato.pdf
    • http://muicuiu.dumb1.com/6a00a02a03a07a03/The-Republic-of-Plato-With-Studies-for-Teachers-by-Plato.pdf
    • http://muicuiu.dumb1.com/5a08a08a01a00a07/The-Republic-By-Plato---Illustrated-by-Plato.pdf
    • http://muicuiu.dumb1.com/4a05a04a01a09a02/Trial-by-Thrall-Trial-Series-2-by-Lizzy-Ford.pdf
    • http://muicuiu.dumb1.com/5a08a07a04a04a05/The-Portable-Plato-by-Plato.pdf
    • http://muicuiu.dumb1.com/4a02a09a04a07a07/Dialogues-of-Plato-by-Plato.pdf
    • http://muicuiu.dumb1.com/8a00a02a06a04a01/Socrates-by-Rascal.pdf
    • http://muicuiu.dumb1.com/7a01a09a05a05a03/Three-New-Olympus-Gods-and-Their-Universe-Socrates-Plato-and-Aristotle-on-Mt-Olympus-Explore-the-Nature-and-Ev

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