Malicious PDF — malware analysis report

Static analysis result for SHA-256 4160ef4ff8c3eed9…

MALICIOUS

PDF

16.4 KB Created: 2019-05-05 16:19:19 +01:00 Authoring application: mPDF 5.7
MD5: 8bac3e4db8ebd5bb8778ce31558f26d7 SHA-1: c910784f193f11ac10203f6b7b197efce1ac3f01 SHA-256: 4160ef4ff8c3eed9fc7bd99dd9b43f7d92f1fb0bcefdecb04141c7c9dadd426d
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious. While the URLs themselves are currently marked as benign, the sheer volume and the heuristic firing indicate a malicious intent to drive traffic to these external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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/3a04a09a09a02a08/Life-s-a-Scream-Autobiography-of-Ingrid-Pitt-by-Ingrid-Pitt.pdf
    • http://muicuiu.dumb1.com/3a04a09a09a02a06/The-Perons-by-Ingrid-Pitt.pdf
    • http://muicuiu.dumb1.com/1a01a06a05a02a08a03/Das-Alexandria-Komplott-Ein-Dirk-Pitt-Roman-Reihenfolge-der-Dirk-Pitt-Abenteuer-9-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/7a07a01a09a04a08/Everything-to-Live-For-The-Inspirational-Story-of-Turia-Pitt-by-Turia-Pitt.pdf
    • http://muicuiu.dumb1.com/5a02a08a01/The-Marvelous-Misadventures-of-Ingrid-Winter-Ingrid-Winter-Misadventure-1-by-J-S-Drangsholt.pdf
    • http://muicuiu.dumb1.com/8a03a00a07a08a01/Notorious-The-Life-of-Ingrid-Bergman-by-Donald-Spoto.pdf
    • http://muicuiu.dumb1.com/7a07a02a00a01a01/Julius-Caesar-Pitt-by-William-Shakespeare.pdf
    • http://muicuiu.dumb1.com/2a09a09a02a00a01/Journeys-To-The-Underworld-by-Fiona-Pitt-Kethley.pdf
    • http://muicuiu.dumb1.com/4a03a01a01a02a03/Deep-Six-Dirk-Pitt-7-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/1a09a02a09a06a09/Static-Station-Lullaby-by-Amber-Pitt.pdf
    • http://muicuiu.dumb1.com/2a04a09a04a05a08/Crescent-Dawn-Dirk-Pitt-21-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/3a08a04a07a07a04/Arctic-Drift-Dirk-Pitt-20-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/2a04a09a04a01a06/Poseidon-s-Arrow-Dirk-Pitt-22-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/1a03a09a08a05a01/Atlantis-Found-Dirk-Pitt-15-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/3a02a02a08a03a00/Southampton-Row-Charlotte-amp-Thomas-Pitt-22-by-Anne-Perry.pdf
    • http://muicuiu.dumb1.com/1a03a08a05a03a08/Night-Probe-Dirk-Pitt-6-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/1a03a07a05a05a07/Notes-from-the-Lost-Property-Department-by-Bridget-Pitt.pdf
    • http://muicuiu.dumb1.com/5a09a00a09a02/Shock-Wave-Dirk-Pitt-13-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/8a05a02a05a01/Trojan-Odyssey-Dirk-Pitt-17-by-Clive-Cussler.pdf
    • http://muicuiu.dumb1.com/7a07a01a09a05a00/Celtic-Empire-Dirk-Pitt-25-by-Clive-Cussler.pdf

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