Malicious PDF — malware analysis report

Static analysis result for SHA-256 3668564f557b3ab6…

MALICIOUS

PDF

14.3 KB Created: 2019-05-02 00:41:36 +01:00 Authoring application: mPDF 5.7
MD5: b0f52b43baa06f24b24479a63352caae SHA-1: 2c5838bf05f17c5d49a08669bd7aff66ae12d058 SHA-256: 3668564f557b3ab63d46e7d286842ca4e9b72a608a488c0db4c1da605ac03b1f
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the PDF structure and link farm heuristic suggest a delivery mechanism for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9200

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
    • http://muicuiu.dumb1.com/1a02a06a07a09a03/Kill-Ratio-by-Bryan-Cassiday.pdf
    • http://muicuiu.dumb1.com/4a00a07a07a06a04/Boxed-by-Bryan-Cassiday.pdf
    • http://muicuiu.dumb1.com/1a01a07a04a03a06/Helter-Skelter-by-Bryan-Cassiday.pdf
    • http://muicuiu.dumb1.com/1a02a09a02a03a04/Zombie-Necropolis-by-Bryan-Cassiday.pdf
    • http://muicuiu.dumb1.com/2a04a06a06a07a01/Countdown-to-Death-by-Bryan-Cassiday.pdf
    • http://muicuiu.dumb1.com/4a06a03a08a09/Freedom-Over-Me-Eleven-Slaves-Their-Lives-and-Dreams-Brought-to-Life-by-Ashley-Bryan-by-Ashley-Bryan.pdf
    • http://muicuiu.dumb1.com/4a02a06a06a05a06/Kill-La-Kill-Volume-1-by-Trigger.pdf
    • http://muicuiu.dumb1.com/4a01a09a01a05a02/All-You-Need-Is-Kill-Vol-1-All-You-Need-Is-Kill-1-by-Ryosuke-Takeuchi.pdf
    • http://muicuiu.dumb1.com/9a01a05a08a07/Ashley-Bryan-s-ABC-of-African-American-Poetry-by-Ashley-Bryan.pdf
    • http://muicuiu.dumb1.com/3a07a07a09a00a06/The-Only-Option-by-Eve-Adam.pdf
    • http://muicuiu.dumb1.com/3a09a09a08a00a05/No-Other-Option-by-Marcus-Wynne.pdf
    • http://muicuiu.dumb1.com/3a05a08a02a06a09/Final-Option-by-Leighton-Rockafellow.pdf
    • http://muicuiu.dumb1.com/4a05a06a09a07a01/Immortality-Option-by-James-P-Hogan.pdf
    • http://muicuiu.dumb1.com/3a06a00a05a08a09/The-Byrdwhistle-option-by-Robert-H-Rimmer.pdf
    • http://muicuiu.dumb1.com/2a05a03a04a06a08/The-Prometheus-Option-by-Jeff-Kirk.pdf
    • http://muicuiu.dumb1.com/1a04a00a02a01a01/Zero-Option-Geordie-Sharp-2-by-Chris-Ryan.pdf
    • http://muicuiu.dumb1.com/2a01a09a07a01a07/The-Shiva-Option-Starfire-4-by-David-Weber.pdf
    • http://muicuiu.dumb1.com/1a00a01a07a04a09a08/Can-t-Is-Not-an-Option-My-American-Story-by-Nikki-Haley.pdf
    • http://muicuiu.dumb1.com/3a04a03a00a08a01/Failure-Is-an-Option-An-Attempted-Memoir-by-H-Jon-Benjamin.pdf
    • http://muicuiu.dumb1.com/3a07a02a01a01a00/The-Assassination-Option-Clandestine-Operations-2-by-W-E-B-Griffin.pdf

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