Malicious PDF — malware analysis report

Static analysis result for SHA-256 903b87350fc23be9…

MALICIOUS

PDF

12.9 KB Created: 2019-04-30 03:30:21 +01:00 Authoring application: mPDF 5.7
MD5: 14bcb965cad029f3fbbaf9af4ce267ba SHA-1: 90c09a3a49aa7752376149a07d4e738ce824ebd6 SHA-256: 903b87350fc23be9d862a0c9ef2ac17e8fc08294555be392893dc6d1b41da85e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains a large number of embedded links to external URLs, a technique often used for SEO spam or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious. No scripts were extracted from this sample, and the document body was not readable.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9006

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/2a08a02a02a09a02/Once-in-a-Lifetime-Lucky-Harbor-9-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/2a00a01a00a04a01/Once-in-a-Lifetime-Lucky-Harbor-9-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/4a08a05a05a08a08/Lucky-in-Love-Lucky-Harbor-4-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/1a04a04a05a07a02/At-Last-Lucky-Harbor-5-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/3a04a04a07a04a06/It-Had-to-be-You-Lucky-Harbor-7-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/3a00a03a07a08a01/Forever-and-a-Day-Lucky-Harbor-6-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/4a05a00a02a00a04/One-in-a-Million-Lucky-Harbor-12-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/8a09a03a08a02a06/Wind-in-de-zeilen-Lucky-Harbor-2-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/4a03a05a03a02a07/Merry-Christmas-Baby-Lucky-Harbor-12-5-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/3a02a06a05a08a01/Who-s-the-Boss-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/5a03a00a09a09a05/Luke-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/9a05a09a09a00a09/The-Bachelor-s-Bed-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/5a00a05a00a01a07/Rescue-My-Heart-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/2a01a07a02a03a01/Merry-and-Bright-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/2a02a05a01a04a02/Merry-and-Bright-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/4a01a02a00/The-Trouble-with-Mistletoe-Heartbreaker-Bay-2-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/4a07a01a00a09a06/Rumor-Has-It-Animal-Magnetism-4-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/4a01a04a09a09a08/Natural-Blond-Instincts-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/2a01a06a02a08a00/Strong-and-Sexy-Sky-High-Air-2-by-Jill-Shalvis.pdf
    • http://muicuiu.dumb1.com/2a00a02a02a08a03/Hot-Winter-Nights-Heartbreaker-Bay-6-by-Jill-Shalvis.pdf

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