Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bcd3a2b02543ee…

MALICIOUS

PDF

15.7 KB Created: 2019-05-02 01:20:55 +01:00 Authoring application: mPDF 5.7
MD5: 02cdf6897a748ea3b0dff7242d0827b4 SHA-1: e734fd43776f47a371ffcba305477a0f98466763 SHA-256: 56bcd3a2b02543ee81c52bc967b71dfc3c71a25ca49876ce468d31beb735694a
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, forming a link farm. The ML classifier strongly indicates maliciousness. The primary heuristic identifies this as a PDF SEO link farm, suggesting the document's purpose is to drive traffic to external sites, likely for malicious purposes such as phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated.

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.dumb1.com/7a04a08a06a05/Wicked-A-Pretty-Little-Liars-Box-Set-Pretty-Little-Liars-5-8-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/2a04a00a08a08a01/Pretty-Little-Liars-Pretty-Little-Liars-1-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/4a08a09a06a07a08/Pretty-Little-Liars-Pretty-Little-Liars-1-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/4a05a03a05a08/Pretty-Little-Liars-Box-Set-Pretty-Little-Liars-1-4-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/1a07a05a05a09a08/Ruthless-Pretty-Little-Liars-10-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/4a05a09a07a00a03/Perfect-Pretty-Little-Liars-3-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/4a03a03a06a03/Deadly-Pretty-Little-Liars-14-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/4a05a09a09a02a08/Wanted-Pretty-Little-Liars-8-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/1a04a08a03a07a01/Vicious-Pretty-Little-Liars-16-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/3a05a02a02a02/Flawless-Pretty-Little-Liars-2-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/3a08a02a09a06/Wicked-Pretty-Little-Liars-5-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/6a05a09a04a06/Crushed-Pretty-Little-Liars-13-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/6a07a05a01a01/Stunning-Pretty-Little-Liars-11-by-Sara-Shepard.pdf
    • http://muicuiu.dumb1.com/1a00a07a08a00a07a01/Dirt-Pretty-Little-Liars-Rosewood-Hotel-Mystery-6-by-M-B-Borchardt.pdf
    • http://muicuiu.dumb1.com/1a00a07a07a08a07a02/The-A-Game-Pretty-Little-Liars-Rosewood-Hotel-Mystery-5-by-M-B-Borchardt.pdf
    • http://muicuiu.dumb1.com/4a02a00a04a04a04/Pretty-Hot-Pretty-1-by-Donna-Alam.pdf
    • http://muicuiu.dumb1.com/5a04a03a04a09a09/Pretty-Hot-Pretty-1-by-Donna-Alam.pdf
    • http://muicuiu.dumb1.com/2a07a09a02a01a03/Pretty-Guardian-Sailor-Moon-Vol-9-Pretty-Soldier-Sailor-Moon-Renewal-Edition-9-by-Naoko-Takeuchi.pdf
    • http://muicuiu.dumb1.com/2a07a09a02a01a02/Pretty-Guardian-Sailor-Moon-Vol-12-Pretty-Soldier-Sailor-Moon-by-Naoko-Takeuchi.pdf
    • http://muicuiu.dumb1.com/1a07a05a05a02a02/Pretty-Wicked-Pretty-Wicked-1-by-Kelly-Charron.pdf

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