Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e94b72ada1f560…

MALICIOUS

PDF

24.1 KB Created: 2019-04-30 09:01:31 +01:00 Authoring application: mPDF 5.7
MD5: b0d98d0357708a603bdecc69fb2b3365 SHA-1: 3e32e6b1a225dd30cf58c50f95009ddb4b15fdb2 SHA-256: 33e94b72ada1f5603bb71d4f0f53bc90210ee35efabe0fe48c804b4a4dfee6b0
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm, which is a common tactic for SEO poisoning or distributing malicious content. The ML classifier also flagged this PDF as malicious. While the specific intent is unclear due to the nature of the links, the sheer volume suggests a malicious attempt to direct users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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/6c56c58c52c58c55/Lewis-Carroll-Box-Set-Alice-Adventures-in-Wonderland-and-Through-the-Looking-Glass-Including-the-Short-Film-the-Delivery-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/5c54c51c50c52c52/Alice-s-Adventures-in-Wonderland-By-Lewis-Carroll---Illustrated-Comes-with-a-Free-Audiobook-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/9c57c50c53c58c59/Alice-Lewis-Carroll-Lewis-Carroll-Alice-Im-Wunderland-Vladimir-Nabokov-Das-Spiegellabyrinth-Alice-in-Wonderland-Humpty-Dumpty-Alice-Liddell-John-Tenniel-Cheshire-Cat-Der-Hutmacher-Christian-Enzensberger-by-Source-Wikipedia.pdf
    • http://zacdsa.linkpc.net/6c55c52c53c54c54/Alice-s-Adventures-in-Wonderland-And-Through-the-Looking-Glass-amp-What-Alice-Found-There-By-Lewis-Carroll-Illustrations-By-John-Tenniel-Children-s-Classics-Sir-John-Tenniel-27-July-1819---25-February-1914-Was-an-English-Illustrator-Graphic-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/6c50c53c58c59c59/Alice-s-Adventures-in-Wonderland-Through-the-Looking-Glass-and-What-Alice-Found-There-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/6c50c57c53c52c54/Alice-s-Adventures-in-Wonderland-Through-the-Looking-Glass-and-What-Alice-Found-There-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/7c57c50c59c57c55/Alice-s-Adventures-in-Wonderland-and-Through-the-Looking-Glass-and-What-Alice-Found-There-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/3c54c59c51c52c53/Alice-s-Adventures-in-Wonderland-By-Lewis-Carroll-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/1c51c54c52c59c56c54/Alice-i-Spegellandet-Alice-s-Adventures-in-Wonderland-2-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/2c59c54c57c56c59/Alice-s-Adventures-Under-Ground-Alice-s-Adventures-in-Wonderland-0-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/1c50c55c54c58c58c59/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/9c52c57c59c55c58/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/5c58c53c59c58/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/4c57c50c53c50c57/Alice-s-Adventures-In-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/6c56c52c59c50c50/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/8c57c52c51c54c51/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/8c54c50c53c53/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/3c55c59c50c56c53/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/2c57c52c54c54c52/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf
    • http://zacdsa.linkpc.net/1c50c58c53c57c59c58/Alice-s-Adventures-in-Wonderland-by-Lewis-Carroll.pdf