Malicious PDF — malware analysis report

Static analysis result for SHA-256 087ea94ec416fbd0…

MALICIOUS

PDF

19.2 KB Created: 2019-05-03 01:53:49 +01:00 Authoring application: mPDF 5.7
MD5: e5f08127a6f0ab9d0c93afa2570a0342 SHA-1: d12999041395e97f8642a1e1351c964c449fb6a3 SHA-256: 087ea94ec416fbd0ba9e30a8ce9117d1edc9b143720670f40a76c356677d227f
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic. While the specific URLs appear benign, the sheer volume and structure suggest an attempt to manipulate search engine results or distribute malicious content. No scripts were extracted, but the presence of embedded links within a PDF is often used for initial access via spearphishing attachments.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9920

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://zacdsa.linkpc.net/2c53c53c56c54c50/Laura-s-Early-Years-Collection-Little-House-1-2-4-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/6c59c55c59c52c55/A-Little-House-Sampler-A-Collection-of-Early-Stories-and-Reminiscences-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/1c53c58c51c57c59/West-from-Home-Letters-of-Laura-Ingalls-Wilder-San-Francisco-1915-Little-House-11-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/1c56c59c54c55c59/A-Little-House-Traveler-Writings-from-Laura-Ingalls-Wilder-s-Journeys-Across-America-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/4c56c58c52c53/The-First-Four-Years-Little-House-9-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/3c53c54c52c51/These-Happy-Golden-Years-Little-House-8-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/4c56c58c51c53/The-Little-House-Collection-Little-House-1-5-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/3c58c55c55c54c55/The-Laura-Ingalls-Wilder-Country-Cookbook-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/6c55c50c58c55/Little-House-on-the-Prairie-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/1c50c54c57c51c59/Little-House-in-the-Big-Woods-Farmer-Boy-Little-House-on-the-Prairie-On-the-Banks-of-Plum-Creek-By-the-Shores-of-Silver-Lake-Little-House-1-5-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/2c57c55c52c50c51/The-Long-Winter-Little-House-6-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/1c55c55c54c53c59/On-the-Banks-of-Plum-Creek-Little-House-4-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/3c56c54c56c55c57/On-the-Banks-of-Plum-Creek-Little-House-4-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/1c55c55c54c54c51/By-the-Shores-of-Silver-Lake-Little-House-5-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/2c55c59c57c55c58/By-the-Shores-of-Silver-Lake-Little-House-5-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/3c52c53c55c56c53/By-the-Shores-of-Silver-Lake-Little-House-5-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/3c58c59c57c50/By-the-Shores-of-Silver-Lake-Little-House-5-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/4c57c51c54c55c58/Little-House-in-the-Big-Woods-Little-House-1-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/1c51c56c59c52c52/Little-House-in-the-Big-Woods-Little-House-1-by-Laura-Ingalls-Wilder.pdf
    • http://zacdsa.linkpc.net/6c58c54c56c55c53/Laura-s-Album-A-Remembrance-Scrapbook-of-Laura-Ingalls-Wilder-by-William-Anderson.pdf