Malicious PDF — malware analysis report

Static analysis result for SHA-256 1caece26c1b75988…

MALICIOUS

PDF

15.5 KB Created: 2019-04-30 02:56:44 +01:00 Authoring application: mPDF 5.7
MD5: 3d4c4710b1ab8463bab99b8ba106a66c SHA-1: b3831d75d939384068366860de15eeeb86ff4a4b SHA-256: 1caece26c1b75988df70b1a606e8a01513e2f1a0f7e118e29c5b25abb0c2ffe6
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, as indicated by the PDF_SEO_LINK_FARM heuristic. While the specific URLs extracted were classified as benign, the sheer volume and structure suggest a malicious intent, possibly for SEO manipulation or to host further malicious content. The ML_NYX_PDF_MALICIOUS classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

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.dumb
    • http://muicuiu.dumb1.com/8a01a05a02a08a01/The-Titan-Series-Boxed-Set-Titan-1-2-3-3-1-3-2-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/8a01a05a02a07a08/Deja-Vu-Titan-7-5-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/2a04a06a06a00a03/Garrison-s-Creed-Titan-2-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/1a07a03a05a02a05/Savage-Secrets-Titan-4-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/1a04a07a04a05a04/Sweet-Girl-Titan-1-5-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/9a06a03a02a00a06/Reading-Guide-Jim-Butcher-Dresden-Files-in-Order-Cinder-Spires-series-Codex-Alera-series-by-Titan-Read.pdf
    • http://muicuiu.dumb1.com/4a04a07a01a06a04/Attack-on-Titan-Vol-11-Attack-on-Titan-11-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/3a01a04a02a02a05/Attack-on-Titan-Vol-3-Attack-on-Titan-3-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/1a00a01a00a06a03/Attack-on-Titan-Vol-2-Attack-on-Titan-2-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/3a01a04a04a02a07/Attack-on-Titan-Vol-5-Attack-on-Titan-5-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/3a03a07a01a02a05/Noah-7-Brides-for-7-Soldiers-6-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/7a08a03a04a06a07/Delta-Rescue-Delta-2-5-The-MacKenzie-Family-10-5-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/5a09a09a03a00/Delta-Retribution-Delta-1-by-Cristin-Harber.pdf
    • http://muicuiu.dumb1.com/2a01a05a08a01a03/Titan-by-Stephen-Baxter.pdf
    • http://muicuiu.dumb1.com/4a06a01a09a02a05/The-Terror-From-Titan-by-Vincent-Cross.pdf
    • http://muicuiu.dumb1.com/2a02a03/The-Return-Titan-1-by-Jennifer-L-Armentrout.pdf
    • http://muicuiu.dumb1.com/4a00a09a05a06/The-Sirens-of-Titan-by-Kurt-Vonnegut.pdf
    • http://muicuiu.dumb1.com/7a05a04a07a07/Attack-on-Titan-Vol-12-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/4a04a07a00a01a07/Attack-on-Titan-Vol-13-by-Hajime-Isayama.pdf
    • http://muicuiu.dumb1.com/1a00a03a03a02a05a05/Attack-on-Titan-Vol-13-by-Hajime-Isayama.pdf

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