Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec27fd091135cf92…

MALICIOUS

PDF

15.8 KB Created: 2019-04-30 05:20:19 +01:00 Authoring application: mPDF 5.7
MD5: adcbb1e9a8e2f4dae430e8286f89757c SHA-1: bba7824934337a23bc8a21d896fb1ff3ce532852 SHA-256: ec27fd091135cf9274917a52d69d0c53359e05808c7209afd3d12a351c9b6419
90 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm, directing users to external PDF documents. This technique is often used to inflate search engine rankings or to distribute malicious content disguised as legitimate files. The ML classifier also flagged this PDF as malicious with a high probability. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

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/5a08a08a01a01a02/Middlemarch-By-George-Eliot---Illustrated-And-Unabridged-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/9a05a09a09a04a05/George-Eliot-Adam-Bede-The-Mill-on-the-Floss-Silas-Marner-Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/5a05a09a05a08a06/Middlemarch-Novel-1871-by-George-Eliot-Pen-Name-of-Mary-Ann-Evans-It-Was-First-Published-in-1871-to-1872-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/7a00a04a04a06a00/Middlemarch-The-Original-Classics---Illustrated-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/8a00a03a00a01a06/Middlemarch-Color-Illustrated-Formatted-for-E-Readers-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/5a08a03a05a08a08/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/1a00a07a05a02a06a02/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/8a01a00a00a06/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/3a07a02a06a01a07/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/4a00a06a06a08a01/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/4a01a01a00a01a02/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/6a00a05a01a06a05/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/8a02a08a07a01a08/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/5a02a06a05a09a02/Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/6a04a05a03a03a00/Silas-Marner-Middlemarch-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/8a07a00a09a07a07/Middlemarch-e-Studie-ber-d-Leben-in-d-Provinz-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/6a09a02a05a07a07/Impressions-of-Theophrastus-Such-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/4a07a00a01a09a03/George-Eliot-by-Jenny-Uglow.pdf
    • http://muicuiu.dumb1.com/9a02a07a02a02a01/Janet-s-Repentance-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/2a08a05a00a00a05/The-Mill-on-the-Floss-by-George-Eliot.pdf
    • http://muicuiu.dumb1.com/1a00a07a05a02a06a02/Middlemarch-by-George-Eliot

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