Malicious PDF — malware analysis report

Static analysis result for SHA-256 e81e69e4c8dbb569…

MALICIOUS

PDF

12.2 KB Created: 2019-04-30 04:41:13 +01:00 Authoring application: mPDF 5.7
MD5: e707da90ea3d25e8b9de660c03888292 SHA-1: 100b31d65dd09902f769ade821ecd08590aca938 SHA-256: e81e69e4c8dbb569e19a8a3af579b31a6f97208ca3b42d42df687f3e9821949f
90 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. These links all point to the same domain, loaminoo.linkpc.net, with numeric slugs in the path, suggesting a link farm or a method to distribute malicious content. The ML_NYX_PDF_MALICIOUS heuristic also flagged the document with high confidence. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious intent, likely leading to further malware downloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8780

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://loaminoo.linkpc.net/5095099098095094/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/8095092098097099/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/5093092093099092/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/7091098098095/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/1091095090091094094/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/6096094090098093/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/6091092093094093/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/8093097098092094/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/5095094095090090/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/5099098093090091/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/5099093093090096/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/4093097096099099/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/5095092093091097/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/1090091097097093090/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/3097091099096097/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/6090098098096/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/5094099092093093/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/6095091093090098/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/1091098094095095093/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf
    • http://loaminoo.linkpc.net/1091090092090099096/The-Great-Gatsby-by-F-Scott-Fitzgerald.pdf

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