Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae12b73f27c8cfb…

MALICIOUS

PDF

16.3 KB Created: 2019-05-07 02:51:32 +01:00 Authoring application: mPDF 5.7
MD5: 2beae40065dfe32d0ff56834cd232e47 SHA-1: f0fe4a2e612b8503bae9ff34a9a95be951f00d9b SHA-256: aae12b73f27c8cfbc215a9477d9e235aa92723d84f5295e07d73ef5f1f85a7fc
90 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. While the ML classifier also flagged this as malicious, the specific intent of these links is unclear beyond potential SEO manipulation or distribution of further content. No scripts were extracted from this sample, limiting the ability to determine a more precise attack pattern or family.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9811

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.dumb
    • http://muicuiu.dumb1.com/4a01a07a05a07a05/Water-Witch-Blood-Witch-Bone-Witch-Witches-of-Etlantium-1-3-by-Thea-Atkinson.pdf
    • http://muicuiu.dumb1.com/4a07a01a00a04a07/The-Little-Princesses-The-Story-of-the-Queen-s-Childhood-by-her-Nanny-Marion-Crawford-by-Marion-Crawford.pdf
    • http://muicuiu.dumb1.com/4a08a00a00a02a00/The-New-Kid-by-Mavis-Jukes.pdf
    • http://muicuiu.dumb1.com/1a05a08a02a03a09/The-Warding-of-Witch-World-Witch-World-Series-4-Secrets-of-the-Witch-World-3-by-Andre-Norton.pdf
    • http://muicuiu.dumb1.com/2a03a06a00a09a02/In-Transit-by-Mavis-Gallant.pdf
    • http://muicuiu.dumb1.com/2a02a03a07a05a02/Shattered-by-Mavis-Marsh.pdf
    • http://muicuiu.dumb1.com/2a03a06a00a07a00/The-Other-Paris-by-Mavis-Gallant.pdf
    • http://muicuiu.dumb1.com/8a09a01a00a09/Whispering-Pines-by-Mavis-Applewater.pdf
    • http://muicuiu.dumb1.com/7a06a04a01a01/Tempus-Fugit-by-Mavis-Applewater.pdf
    • http://muicuiu.dumb1.com/3a05a02a02a04a08/My-Sister-s-Keeper-by-Mavis-Applewater.pdf
    • http://muicuiu.dumb1.com/2a03a05a09a00a08/Paris-Stories-by-Mavis-Gallant.pdf
    • http://muicuiu.dumb1.com/2a04a02a04a01a09/Getting-Back-Brahms-by-Mavis-Cheek.pdf
    • http://muicuiu.dumb1.com/2a03a05a09a02a08/From-The-Fifteenth-District-by-Mavis-Gallant.pdf
    • http://muicuiu.dumb1.com/3a01a05a05a09a02/Blackberries-in-the-Dark-by-Mavis-Jukes.pdf
    • http://muicuiu.dumb1.com/2a03a05a09a04a08/Montreal-Stories-by-Mavis-Gallant.pdf
    • http://muicuiu.dumb1.com/2a03a06a01a00a05/Across-the-Bridge-Stories-by-Mavis-Gallant.pdf
    • http://muicuiu.dumb1.com/5a01a06a04a07a02/On-the-Road-with-Mavis-and-Marge-by-Niamh-Sharkey.pdf
    • http://muicuiu.dumb1.com/1a01a00a00a09a09a03/Witch-Children-From-Salem-Witch-Hunts-to-Modern-Courtrooms-by-Hans-Sebald.pdf
    • http://muicuiu.dumb1.com/4a07a06a05a08a07/Return-Of-The-Witch-Detective-Marcella-Witch-s-series-9-by-Dana-E-Donovan.pdf
    • http://muicuiu.dumb1.com/4a05a07a01a03a09/Witch-Hunt-Mysteries-of-the-Salem-Witch-Trials-by-Marc-Aronson.pdf

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