Malicious PDF — malware analysis report

Static analysis result for SHA-256 a15ae5bf8716ef2e…

MALICIOUS

PDF

16.5 KB Created: 2019-04-30 03:25:32 +01:00 Authoring application: mPDF 5.7
MD5: 1ae443fa4fca6a605d0b23ed479eec77 SHA-1: 815f5c19b299c63df59a51fe7f5b44edd461ac37 SHA-256: a15ae5bf8716ef2ed3800bd6de81c4b931da80dd5a31250e44cddccaea430164
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 document body is heavily obfuscated, the heuristic firings indicate a malicious intent to redirect users to external content. The ML classifier also strongly suggests maliciousness. The primary attack pattern involves leveraging these links, potentially for SEO spam or to serve further malicious payloads.

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.dumb1.com/1a03a02a01a08a00/Miss-Armistead-Makes-Her-Choice-Miss-Delacourt-6-by-Heidi-Ashworth.pdf
    • http://muicuiu.dumb1.com/2a05a00a01a08a08/Miss-Radley-s-Third-Dare-Miss-Mayhem-3-by-Heather-Boyd.pdf
    • http://muicuiu.dumb1.com/1a00a06a09a06a02a02/How-Different-From-Us-A-Biography-of-Miss-Buss-and-Miss-Beale-by-Josephine-Kamm.pdf
    • http://muicuiu.dumb1.com/2a03a07a09a01a07/Miss-Happiness-and-Miss-Flower-by-Rumer-Godden.pdf
    • http://muicuiu.dumb1.com/8a06a03a09a05/Miss-Happiness-and-Miss-Flower-by-Rumer-Godden.pdf
    • http://muicuiu.dumb1.com/8a03a07a05a02a04/Miss-Dimple-Picks-a-Peck-of-Trouble-Miss-Dimple-Kilpatrick-4-by-Mignon-F-Ballard.pdf
    • http://muicuiu.dumb1.com/2a08a06a08a04a05/Miss-Dimple-Disappears-Miss-Dimple-Kilpatrick-1-by-Mignon-F-Ballard.pdf
    • http://muicuiu.dumb1.com/1a04a01a09a06a05/Miss-Popularity-Miss-Popularity-1-Candy-Apple-3-by-Francesco-Sedita.pdf
    • http://muicuiu.dumb1.com/8a01a07a08a02a09/The-Devil-And-Miss-Prym---Iblis-Dan-Miss-Prym-by-Paulo-Coelho.pdf
    • http://muicuiu.dumb1.com/2a01a01a01a00a05/Miss-Zukas-and-the-Raven-s-Dance-Miss-Zukas-4-by-Jo-Dereske.pdf
    • http://muicuiu.dumb1.com/3a03a02a00a06a01/Miss-Julia-Rocks-the-Cradle-Miss-Julia-12-by-Ann-B-Ross.pdf
    • http://muicuiu.dumb1.com/3a03a02a00a06a06/Miss-Julia-Paints-the-Town-Miss-Julia-9-by-Ann-B-Ross.pdf
    • http://muicuiu.dumb1.com/1a04a09a01a07a00/Miss-Nelson-Has-a-Field-Day-Miss-Nelson-3-by-Harry-Allard.pdf
    • http://muicuiu.dumb1.com/2a01a01a00a05a03/Miss-Zukas-and-the-Library-Murders-Miss-Zukas-1-by-Jo-Dereske.pdf
    • http://muicuiu.dumb1.com/3a03a02a00a06a03/Miss-Julia-Renews-Her-Vows-Miss-Julia-11-by-Ann-B-Ross.pdf
    • http://muicuiu.dumb1.com/7a05a04a06a05a02/Miss-Nelson-Trilogy-Set-Miss-Nelson-1-3-by-Harry-Allard.pdf
    • http://muicuiu.dumb1.com/2a06a01a03a07a08/Miss-Seeton-Rules-Miss-Seeton-18-by-Hamilton-Crane.pdf
    • http://muicuiu.dumb1.com/6a03a00a09a08a04/Miss-Seeton-by-Appointment-Miss-Seeton-6-by-Hampton-Charles.pdf
    • http://muicuiu.dumb1.com/9a08a04a02a05/Miss-Marianne-Woods-And-Miss-Jane-Pirie-Against-Dame-Helen-Cumming-Gordon-by-Marianne-Woods.pdf
    • http://muicuiu.dumb1.com/4a07a05a04a08a06/Miss-Buncle-s-Book-Miss-Buncle-1-by-D-E-Stevenson.pdf
    • http://muicuiu.dumb1.com/8a01a07a08a02a09/The-D

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