Malicious PDF — malware analysis report

Static analysis result for SHA-256 55f3ad7b4d101af1…

MALICIOUS

PDF

15.7 KB Created: 2019-04-30 03:11:32 +01:00 Authoring application: mPDF 5.7
MD5: 2a9df28158e8129d6a3ee34a1449cbd7 SHA-1: ac0d0103f83a07d3ed50800d336b7fa598f9aa84 SHA-256: 55f3ad7b4d101af18bb6ea849dc04d3359925149234d59157992dcaf62bdda00
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded links to external websites, as indicated by the PDF_SEO_LINK_FARM heuristic. While most of these URLs are marked as benign, the sheer volume and the ML_NYX_PDF_MALICIOUS classification suggest a malicious intent, likely related to SEO manipulation or directing users to potentially harmful content. No scripts were extracted from this sample.

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/8a00a09a07a00a09/-Black-Dogs-by-Ian-McEwan-by-Claudia-Rittig.pdf
    • http://muicuiu.dumb1.com/3a01a06a02a04a00/Dogs-Dogs-Dogs-A-Collection-of-Great-Dog-Cartoons-by-Sam-Gross.pdf
    • http://muicuiu.dumb1.com/6a06a07a01a07a01/Haute-Dogs-Recipes-for-Delicious-Hot-Dogs-Buns-and-Condiments-by-Russell-van-Kraayenburg.pdf
    • http://muicuiu.dumb1.com/3a09a06a08a09a08/G-I-Dogs-Sergeant-Stubby-Hero-Pup-of-World-War-I-G-I-Dogs-2-by-Laurie-Calkhoven.pdf
    • http://muicuiu.dumb1.com/5a01a05a07a02/The-Genius-of-Dogs-How-Dogs-Are-Smarter-than-You-Think-by-Brian-Hare.pdf
    • http://muicuiu.dumb1.com/3a01a06a00a04a04/All-Dogs-Go-to-Kevin-Everything-Three-Dogs-Taught-Me-by-Jessica-Vogelsang.pdf
    • http://muicuiu.dumb1.com/1a01a06a07a09a00a01/Stress-in-Dogs-Learn-How-Dogs-Show-Stress-and-What-You-Can-Do-to-Help-by-Martina-Scholz.pdf
    • http://muicuiu.dumb1.com/8a00a09a07a01a07/For-You-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/2a05a00a07a03a07/Saturday-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/1a09a03a07a07a00/In-Between-the-Sheets-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/2a01a02a02a08a00/Atonement-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/3a03a06a08a05a06/In-Between-the-Sheets-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/4a00a00a06a04a08/Atonement-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/1a00a03a09a01a05a05/Atonement-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/3a06a07a06a00/The-Comfort-of-Strangers-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/3a04a01a04a09/On-Chesil-Beach-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/9a00a03a07a03/On-Chesil-Beach-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/8a00a09a07a00a08/My-Purple-Scented-Novel-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/3a07a01a01a04a00/The-Comfort-of-Strangers-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/3a09a02a01a09/Enduring-Love-by-Ian-McEwan.pdf
    • http://muicuiu.dumb1.com/1a01a06a07a09a00a01/Stress-in-Dogs-Learn-

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