Malicious PDF — malware analysis report

Static analysis result for SHA-256 676e23b767bcbfb6…

MALICIOUS

PDF

13.3 KB Created: 2019-04-30 04:32:29 +01:00 Authoring application: mPDF 5.7
MD5: cd66d0fe3a3d95cd8aaa6ecb6cb8ddaf SHA-1: d5042b7417ebde487735c7159b009b2965cfcca3 SHA-256: 676e23b767bcbfb62c7b1707eff2aae6433b161cdb2927c57aa3498342e39ab2
100 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, which is a common technique for distributing malicious content or leading users to phishing sites. While the specific URLs extracted were marked as benign, the sheer volume and the ML classifier's high confidence score suggest a malicious intent. The document body was unreadable, but the presence of embedded links strongly indicates a lure to external content, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

Heuristics 3

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/2a04a01a03a02a07/You-Are-My-I-Love-You-by-Maryann-K-Cusimano.pdf
    • http://muicuiu.dumb1.com/4a04a06a07a00a04/Serial-Love-Saints-Protection-amp-Investigations-1-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/4a06a05a09a05a06/Searching-Love-Saints-Protection-amp-Investigations-11-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/4a04a06a07a00a02/Honor-Love-Saints-Protection-amp-Investigations-5-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/2a07a01a01a07a07/Belonging-Places---Every-woman-s-story-on-life-lessons-and-love-by-Maryann-Weston.pdf
    • http://muicuiu.dumb1.com/1a01a08a06a02a09/Because-Of-You-by-Maryann-Morris.pdf
    • http://muicuiu.dumb1.com/5a00a08a03a09a05/Doubletake-by-Maryann-Miller.pdf
    • http://muicuiu.dumb1.com/4a03a07a02a00a09/Open-Season-by-Maryann-Miller.pdf
    • http://muicuiu.dumb1.com/4a04a02a06a04a07/Picking-Up-the-Pieces-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/8a00a06a03a07a04/Locus-Mentis-by-Maryann-L-Miller.pdf
    • http://muicuiu.dumb1.com/7a04a06a04a07a04/Laurie-s-Time-Fairfield-2-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/2a07a07a06a02a01/The-Tapestry-Alcott-Legacy-1-by-MaryAnn-Minatra.pdf
    • http://muicuiu.dumb1.com/4a05a00a00a09a05/Emma-s-Home-Fairfield-1-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/1a00a01a02a06a09a04/Thin-Ice-Sleeper-SEALs-7-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/8a03a06a09a03a06/Wild-Bill-Hickok-by-Maryann-N-Weidt.pdf
    • http://muicuiu.dumb1.com/8a01a07a09a03a01/Jack-s-Talent-by-Maryann-Cocca-Leffler.pdf
    • http://muicuiu.dumb1.com/1a04a08a03a00a08/Coming-Home-Baytown-Boys-1-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/1a00a02a02a05a04a04/Waiting-for-Sunrise-Baytown-Boys-Series-by-Maryann-Jordan.pdf
    • http://muicuiu.dumb1.com/9a07a05a03a02a01/Theo-s-Mood-A-Book-of-Feelings-by-Maryann-Cocca-Leffler.pdf
    • http://muicuiu.dumb1.com/7a04a06a04a07a03/Fireworks-Over-Fairfield-Fairfield-3-5-by-Maryann-Jordan.pdf

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