Malicious PDF — malware analysis report

Static analysis result for SHA-256 870a26af204d11c6…

MALICIOUS

PDF

16.4 KB Created: 2019-05-07 04:01:14 +01:00 Authoring application: mPDF 5.7
MD5: 272279152c390b3c809b2288e7902646 SHA-1: ffde77cdf26310df233735f776d0608ae7501306 SHA-256: 870a26af204d11c6461db15eda7b72977dc3bb8f0babd41de8d402214b62989d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs that point to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ML classifier also flagged this PDF as malicious. While the document body is heavily corrupted, the presence of a link farm and the ML detection strongly suggest malicious intent, likely to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/6a02a07a00a01a09/A-World-Elsewhere-The-Place-of-Style-in-American-Literature-by-Richard-Poirier.pdf
    • http://muicuiu.dumb1.com/2a02a00a05a09/Robert-Frost-The-Work-of-Knowing-With-a-New-Afterword-by-Richard-Poirier.pdf
    • http://muicuiu.dumb1.com/8a04a09a07a06a00/Clergy-Renewal-The-Alban-Guide-To-Sabbatical-Planning-by-A-Richard-Bullock.pdf
    • http://muicuiu.dumb1.com/6a02a07a00a03a05/Anne-e-Patrick-Poirier-by-Anne-Poirier.pdf
    • http://muicuiu.dumb1.com/1a01a07a09a05a02a08/French-Sinologists-Treatises-on-Chinese-Literature--contemporary-Literature-by-Qian-Linsen.pdf
    • http://muicuiu.dumb1.com/1a05a05a03a04a02/Renewal-by-J-F-Perkins.pdf
    • http://muicuiu.dumb1.com/6a02a07a00a01a03/Raw-Ambition-Series-1-by-Solange-Poirier.pdf
    • http://muicuiu.dumb1.com/6a02a07a00a01a02/Naked-Pueblo-by-Mark-Jude-Poirier.pdf
    • http://muicuiu.dumb1.com/6a02a07a00a00a04/Eyes-The-Irises-Series-1-by-Veronique-Poirier.pdf
    • http://muicuiu.dumb1.com/6a02a07a01a01a09/The-Peace-Making-Pastor-by-Alfred-Poirier.pdf
    • http://muicuiu.dumb1.com/8a01a04a01a07a07/5150-New-Beginnings-Urban-Renewal-by-Ed-Texeira.pdf
    • http://muicuiu.dumb1.com/8a02a09a01a02a06/Flying-Over-the-Fence-With-Amadou-Diallo-by-Julien-Poirier.pdf
    • http://muicuiu.dumb1.com/3a01a08a06a08a02/The-Bear-Wife-A-Great-and-New-American-Tale-by-Ken-Poirier.pdf
    • http://muicuiu.dumb1.com/6a02a07a00a00a06/Modern-Ranch-Living-by-Mark-Jude-Poirier.pdf
    • http://muicuiu.dumb1.com/6a02a08a05a05a09/Memoirs-of-Hope-Renewal-and-Endeavor-by-Charles-de-Gaulle.pdf
    • http://muicuiu.dumb1.com/6a02a07a00a07a03/Doctors-in-the-Making-Memoirs-and-Medical-Education-by-Suzanne-Poirier.pdf
    • http://muicuiu.dumb1.com/6a02a07a01a01a07/Escourolle-amp-Poirier-s-Manual-of-Basic-Neuropathology-by-Frangoise-Gray.pdf
    • http://muicuiu.dumb1.com/6a02a07a00a01a08/Unsung-Heroes-of-American-Industry-by-Mark-Jude-Poirier.pdf
    • http://muicuiu.dumb1.com/6a02a07a00a00a07/Escourolle-amp-Poirier-s-Manual-of-Basic-Neuropathology-by-Fran-oise-Gray.pdf
    • http://muicuiu.dumb1.com/8a09a02a09a08a08/Endure-Renewal-from-Ground-Zero-Limited-Edition-by-Jurek-Wajdowicz.pdf

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