Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd92b430a63cb90…

MALICIOUS

PDF

14.9 KB Created: 2019-05-05 15:52:22 +01:00 Authoring application: mPDF 5.7
MD5: e9b87e18317cdcbafe6e5a7d999ce9b7 SHA-1: 26a7ab8ee4ce04f2d99264df9fcac8d63541522d SHA-256: 2dd92b430a63cb90998c26c9d7e9a5ad641737033c922f065ddeffa2679d32a4
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier also flagged it as malicious, the specific intent appears to be the creation of a link farm rather than direct payload delivery. The majority of the extracted URLs were confirmed as benign, suggesting the primary malicious activity is the link farm itself, potentially for SEO manipulation or to obscure malicious redirects. No scripts were extracted from this sample.

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/1a05a02a03a08a08/Seven-by-Tristan-K-Hodges.pdf
    • http://muicuiu.dumb1.com/3a09a06a04a07a07/Tristan-With-the-Surviving-Fragments-of-the-Tristan-of-Thomas-by-Gottfried-von-Stra-burg.pdf
    • http://muicuiu.dumb1.com/5a07a07a03a03a00/The-unholy-Books-of-Tristan-Wrangler-Tristan-Wrangler-Series-Book-1-by-Don-Both.pdf
    • http://muicuiu.dumb1.com/1a07a00a06a00a09/Starbucks-Bitches-by-Brian-Hodges.pdf
    • http://muicuiu.dumb1.com/5a04a02a04a02/His-Sexy-Bad-Habit-by-Cheris-Hodges.pdf
    • http://muicuiu.dumb1.com/1a00a06a08a00a03a02/Gulliver-in-Lilliput-by-Margaret-Hodges.pdf
    • http://muicuiu.dumb1.com/4a02a04a06a08a07/Alan-Turing-by-Andrew-Hodges.pdf
    • http://muicuiu.dumb1.com/4a07a05a08a03a02/Alan-Turing-The-Enigma-by-Andrew-Hodges.pdf
    • http://muicuiu.dumb1.com/2a09a01a00a04a03/Asylum-The-Circeae-Tales-by-Ashley-Hodges-Bazer.pdf
    • http://muicuiu.dumb1.com/4a05a03a04a08a09/Mr-Mercedes-Bill-Hodges-Trilogy-1-by-Stephen-King.pdf
    • http://muicuiu.dumb1.com/1a00a01a04a00a05a04/Mr-Mercedes-Bill-Hodges-Trilogy-1-by-Stephen-King.pdf
    • http://muicuiu.dumb1.com/4a01a08a08a01a00/Mr-Mercedes-Bill-Hodges-Trilogy-1-by-Stephen-King.pdf
    • http://muicuiu.dumb1.com/2a00a08a03a09a06/End-of-Watch-Bill-Hodges-Trilogy-3-by-Stephen-King.pdf
    • http://muicuiu.dumb1.com/1a09a09a07a08a05/The-Adventures-of-Fred-and-Hodges-The-Meeting-by-Twaina-D-Gannon.pdf
    • http://muicuiu.dumb1.com/3a08a00a09a05a05/The-Arrow-and-the-Lamp-The-Story-of-Psyche-by-Margaret-Hodges.pdf
    • http://muicuiu.dumb1.com/9a05a08a08/Mr-Mercedes-Bill-Hodges-Trilogy-1-by-Stephen-King.pdf
    • http://muicuiu.dumb1.com/3a02a03a08a01a01/Finders-Keepers-Bill-Hodges-Trilogy-2-by-Stephen-King.pdf
    • http://muicuiu.dumb1.com/1a00a00a09/Finders-Keepers-Bill-Hodges-Trilogy-2-by-Stephen-King.pdf
    • http://muicuiu.dumb1.com/8a08a08a02a01/For-The-Love-Of-Ann-Based-On-A-Diary-By-Jack-Hodges-by-James-Copeland.pdf
    • http://muicuiu.dumb1.com/4a03a05a05a03a07/Tristan-and-Iseult-by-J-D-Smith.pdf

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