Malicious PDF — malware analysis report

Static analysis result for SHA-256 4deb21aed2ee7ec6…

MALICIOUS

PDF

14.9 KB Created: 2019-04-30 03:57:58 +01:00 Authoring application: mPDF 5.7
MD5: bf011dc72014b0bb0049a41891d9904d SHA-1: aa4a97e8c00972495c716a1b4e5d2a02c5b4c581 SHA-256: 4deb21aed2ee7ec6022fa042cd348b1b6c504afd78637f1683a7020d0ffacf3e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links 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. No scripts were extracted from this sample, and the document body was unreadable, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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/1a01a03a09a01a06a08/The-Search-for-a-Soul-Taylor-Caldwell-s-Psychic-Lives-by-Jess-Stearn.pdf
    • http://muicuiu.dumb1.com/1a09a04a03a08a06/Edgar-Cayce-The-Sleeping-Prophet-by-Jess-Stearn.pdf
    • http://muicuiu.dumb1.com/2a03a07a04a01a02/Testimony-of-Two-Men-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/1a01a03a09a01a06a09/The-Listener-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/6a03a09a02a00a05/Melissa-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/1a04a00a00a07a03/Dialogues-with-the-Devil-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/1a03a09a01a09a05/Captains-and-the-Kings-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/9a03a03a04a05/Great-Lion-of-God-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/2a06a04a06a09a00/A-Prologue-to-Love-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/3a02a09a09a01a03/Your-Sins-and-Mine-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/4a06a00a09a05a06/Captains-and-the-Kings-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/2a05a07a06a09a06/Wicked-Angel-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/2a09a07a04a00a05/Grandmother-and-the-Priests-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/3a08a01a08a00a08/Bright-Flows-the-River-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/7a03a02a04a08a02/Dynasty-of-Death-Barbours-Bouchards-1-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/1a05a04a07a08a03/On-Growing-Up-Tough-An-Irreverent-Memoir-by-Taylor-Caldwell.pdf
    • http://muicuiu.dumb1.com/3a08a08a02a05a03/Fuzz-and-Pluck-Splitsville-by-Ted-Stearn.pdf
    • http://muicuiu.dumb1.com/9a01a03a07a07a08/Jackpot-The-Short-Stories-of-Erskine-Caldwell-by-Erskine-Caldwell.pdf
    • http://muicuiu.dumb1.com/8a02a01a04a01a08/The-Caroline-Military-System-The-Expedition-to-Cadiz-and-Rhe-1625-1627-by-Stephen-Stearn.pdf
    • http://muicuiu.dumb1.com/5a01a04a06a07/Avatar-The-Last-Airbender-The-Search-Part-3-The-Search-3-by-Gene-Luen-Yang.pdf
    • http://muicuiu.dumb1.com/4a06a00a09a05a06/Captains

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