Malicious PDF — malware analysis report

Static analysis result for SHA-256 c84fe23e954fa9d0…

MALICIOUS

PDF

15.4 KB Created: 2019-04-30 04:37:31 +01:00 Authoring application: mPDF 5.7
MD5: 7258d2b29ea9e23de957ae7f575d6157 SHA-1: 026ee50431955492adcdb72d8709691ad2aab9d2 SHA-256: c84fe23e954fa9d0a7eea076960139e88162749d50ff717c464fc6a3d1acb02a
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 ML classifier flagged it as malicious, the specific URLs themselves are currently marked as confirmed benign. The primary attack pattern appears to be SEO manipulation or potentially a distribution point for other malicious content, leveraging the link farm to obscure its true purpose. No scripts were extracted, limiting further analysis of direct payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9778

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/4a09a09a01a08a05/Shatter-by-T-C-Sherry.pdf
    • http://muicuiu.dumb1.com/1a01a05a08a08a05a03/Sherry-Serafini-s-Sensational-Bead-Embroidery-25-Inspiring-Jewelry-Projects-by-Sherry-Serafini.pdf
    • http://muicuiu.dumb1.com/2a05a07a09a08a01/Shatter-by-Michael-Robotham.pdf
    • http://muicuiu.dumb1.com/9a05a05a07a00a04/Unravel-Me-Shatter-Me-2-by-Tahereh-Mafi.pdf
    • http://muicuiu.dumb1.com/4a07a09a02a06a02/Destroy-Me-Shatter-Me-1-5-by-Tahereh-Mafi.pdf
    • http://muicuiu.dumb1.com/1a01a01a03a01a05/Ignite-Me-Shatter-Me-3-by-Tahereh-Mafi.pdf
    • http://muicuiu.dumb1.com/2a03a09a05a01a04/Shatter-The-Children-of-Man-1-by-Elizabeth-C-Mock.pdf
    • http://muicuiu.dumb1.com/2a03a05a07a03a06/Untitled-Shatter-Me-6-by-Tahereh-Mafi.pdf
    • http://muicuiu.dumb1.com/2a03a05a03a06a05/Shatter-Delaney-s-Gift-2-by-Amber-Garza.pdf
    • http://muicuiu.dumb1.com/3a04a07a07a02a03/One-Two-Three-Shatter-Xander-1-by-Joey-James-Hook.pdf
    • http://muicuiu.dumb1.com/3a00a08a02a06a07/Shatter-Me-The-Jaded-Series-1-by-Alex-Grayson.pdf
    • http://muicuiu.dumb1.com/6a07a01a02a06a04/Shatter-Me-5-Book-Series-by-Tahereh-Mafi.pdf
    • http://muicuiu.dumb1.com/3a03a06a04a00a07/Watching-Glass-Shatter-by-James-J-Cudney.pdf
    • http://muicuiu.dumb1.com/8a05a00a03a05/Shatter-Unbreakable-Bonds-2-by-Jocelynn-Drake.pdf
    • http://muicuiu.dumb1.com/2a07a08a09a06a04/Mindquakes-Stories-To-Shatter-Your-Brain-by-Neal-Shusterman.pdf
    • http://muicuiu.dumb1.com/5a04a09a06a01/Soft-Shatter-Wolven-Moon-1-by-Dany-Rae-Miller.pdf
    • http://muicuiu.dumb1.com/8a07a09a05a01a08/I-Killed-June-Cleaver-Modern-Moms-Shatter-the-Myth-of-Perfect-Parenting-by-Deborah-Werksman.pdf
    • http://muicuiu.dumb1.com/2a00a09a04a01a01/Like-Ice-by-Sherry-Torgent.pdf
    • http://muicuiu.dumb1.com/4a02a01a07a04a01/The-Everywhere-House-by-Sherry-Lincoln.pdf
    • http://muicuiu.dumb1.com/1a01a09a06a07a06/Beyond-Billicombe-by-Sherry-Chiger.pdf

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