Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1ba618baa63324…

MALICIOUS

PDF

14.2 KB Created: 2019-05-01 06:12:33 +01:00 Authoring application: mPDF 5.7
MD5: 2013619df5b2b265824a5c4a4483695e SHA-1: cbcb23ee983853e0c974dd3d22dc91e81324ef66 SHA-256: 0f1ba618baa633245e62edba62f6c7281cf5ab77d5a1660d0fded3710bd058b8
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. While the document body is heavily obfuscated, the presence of numerous links suggests an attempt to manipulate search engine results or direct users to potentially malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the link farm behavior is indicative of a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9200

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/1a06a03a09a00a03/Todd-And-Brad-Reed-s-Michigan-Wednesdays-in-the-Mitten-by-Todd-Reed.pdf
    • http://muicuiu.dumb1.com/3a07a01a07a09/Carter-Reed-Carter-Reed-1-by-Tijan.pdf
    • http://muicuiu.dumb1.com/8a00a09a06a01a00/Reed-Farrel-Coleman-Books-Checklist-Reading-Order-of-Coleman-s-Jesse-Stone-Series-Gus-Murphy-Series-Joe-Serpe-Series-Moe-Prager-Series-and-List-of-All-Reed-Farrel-Coleman-Books-by-Kevin-Hanson.pdf
    • http://muicuiu.dumb1.com/1a00a03a08a02a02/Where-by-Kit-Reed.pdf
    • http://muicuiu.dumb1.com/4a06a01a00a03/Beautiful-by-Amy-Reed.pdf
    • http://muicuiu.dumb1.com/9a02a05a07a04a02/Schiller-by-T-J-Reed.pdf
    • http://muicuiu.dumb1.com/1a00a05a01a06a06a02/Counting-On-You-by-J-C-Reed.pdf
    • http://muicuiu.dumb1.com/3a06a07a09a01a02/Clean-by-Amy-Reed.pdf
    • http://muicuiu.dumb1.com/5a07a03a05a08a06/Bronze-by-Kit-Reed.pdf
    • http://muicuiu.dumb1.com/6a06a01a07/The-Nowhere-Girls-by-Amy-Reed.pdf
    • http://muicuiu.dumb1.com/2a04a03a04a03a05/Crazy-by-Amy-Reed.pdf
    • http://muicuiu.dumb1.com/4a05a07a04a04a04/How-I-Met-My-Man-by-Rick-R-Reed.pdf
    • http://muicuiu.dumb1.com/7a07a02a02a08/Clean-by-Amy-Reed.pdf
    • http://muicuiu.dumb1.com/4a02a06a06a09a08/Sorry-Not-Sorry-by-Jaime-Reed.pdf
    • http://muicuiu.dumb1.com/1a01a06a08a00a05a05/DNA-by-W-Craig-Reed.pdf
    • http://muicuiu.dumb1.com/5a00a00a09a04a03/Childproofed-by-Reese-Reed.pdf
    • http://muicuiu.dumb1.com/2a08a06a08a05a09/Caregiver-by-Rick-R-Reed.pdf
    • http://muicuiu.dumb1.com/2a02a08a01a04a03/Bashed-by-Rick-R-Reed.pdf
    • http://muicuiu.dumb1.com/6a06a06a07a02a04/Schubert-by-John-Reed.pdf
    • http://muicuiu.dumb1.com/4a00a02a04a00a03/Requiem-for-a-Kingfish-by-Ed-Reed.pdf

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