Malicious PDF — malware analysis report

Static analysis result for SHA-256 995b0c0d44e54ce5…

MALICIOUS

PDF

17.3 KB Created: 2019-05-06 16:43:12 +01:00 Authoring application: mPDF 5.7
MD5: fe64bd02527d21435f355338d933a9d3 SHA-1: c1d49edc86379e17905a83edeca2a4ca0b9c88c0 SHA-256: 995b0c0d44e54ce59c33836826037853e8c13a7d13a5ae0cf01becb31bed6d6e
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified as a link farm. While the URLs themselves are currently marked as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to serve as a landing page for further malicious activity. The ML classifier strongly flagged this PDF as malicious, supporting this assessment. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

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/1a01a08a07a00a08a03/The-Case-of-the-Caretaker-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/7a06a01a08a09a05/The-Second-Gong-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/7a06a02a00a01a03/Double-Sin-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/7a06a01a08a09a00/Dead-Man-s-Mirror-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/3a01a06a09a06a05/The-Mystery-of-the-Blue-Jar-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/3a06a01a01a08a08/The-Disappearance-of-Mr-Davenheim-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/3a06a01a02a00a06/The-King-of-Clubs-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/3a05a09a05a05a04/The-Adventure-of-Johnnie-Waverly-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/5a00a04a07a01a08/The-House-of-Lurking-Death-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/7a06a02a00a02a01/The-Affair-at-the-Victory-Ball-A-Short-Story-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/7a06a02a01a01a07/Clues-to-Christie-The-Definitive-Guide-to-Miss-Marple-Hercule-Poirot-Tommy-amp-Tuppence-and-All-of-Agatha-Christie-s-Mysteries-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/1a08a06a07a05a07/Curtain-Poirot-s-Last-Case-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/1a01a05a06a02a09a02/The-First-Case-of-Poirot-The-Mysterious-Affair-at-Styles-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/9a09a01a00a05a00/The-Mysterious-Affair-at-Styles-Poirot-s-First-Case-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/1a01a05a07a03a05a06/The-Mysterious-Affair-at-Styles-Hercule-Poirot-s-First-Case-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/7a09a01a03a04a05/The-Mysterious-Affair-at-Styles-by-Agatha-Christie-Annotated-James-Lynn-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/5a05a00a04a03/Hercule-Poirot-The-Complete-Short-Stories-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/1a07a03a04a01a09/Miss-Marple-The-Complete-Short-Stories-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/1a01a08a07a01a00a08/The-Detectives-Miss-Marple-Poirot-and-Others-Short-Stories-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/7a07a01a01a02a07/The-Mysterious-Affair-at-Styles-by-Agatha-Christie-classics-by-Agatha-Christie.pdf
    • http://muicuiu.dumb1.com/7a06a02a01a01a07/Clues-to-Christie-The-Definitive-Guide-to-Miss-Marple-Hercule-Poirot-Tommy-amp-Tuppence-and-All-of-Agatha-C

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