Malicious PDF — malware analysis report

Static analysis result for SHA-256 55371cd8a729adc2…

MALICIOUS

PDF

13.4 KB Created: 2019-04-30 04:40:28 +01:00 Authoring application: mPDF 5.7
MD5: 63d0862247f05c25f5c5fe1153b13bb8 SHA-1: d5218bfa300b21819d7b686b97b8d983dd5e48cd SHA-256: 55371cd8a729adc2a71033a8b63cc678e65633267ebf3d20f05e882003be7b67
90 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. While the specific URLs extracted appear benign, the sheer volume and structure suggest a malicious intent, possibly for SEO poisoning or to redirect users to malicious content. The ML classifier also flagged this PDF as malicious with high confidence. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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/8a07a05a01a09/The-Judgment-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/4a07a02a02a07a03/The-Judgment-Rose-Trilogy-2-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1a01a01a08a02a04a09/The-Englisher-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/4a09a09a02a07a05/The-Photograph-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/2a03a03a07a00a00/The-Atonement-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/3a08a09a02a06a03/The-First-Love-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/8a03a06a09a08/The-Mercy-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/4a07a02a00a03a03/The-Secret-Keeper-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1a00a04a05a04a03a03/Annika-s-Secret-Wish-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1a01a06a06a07a03/The-Covenant-Abram-s-Daughters-1-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/5a07a04a07a07/The-Thorn-Rose-Trilogy-1-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/4a04a04a00a02a08/The-Sacrifice-Abram-s-Daughters-3-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1a03a08a01a00a03/The-Redemption-of-Sarah-Cain-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/2a03a05a00a01a01/The-Rose-Trilogy-Boxed-Set-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1a03a08a02a02a06/The-Crossroad-Amish-Country-Crossroads-2-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/2a03a05a00a03a00/The-Forbidden-The-Courtship-of-Nellie-Fisher-2-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1a03a07a08a04a00/The-Shunning-The-Heritage-of-Lancaster-County-1-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1a03a08a01a06a02/The-Postcard-Amish-Country-Crossroads-1-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1a06a08a09a05a08/The-Preacher-s-Daughter-Annie-s-People-1-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/2a03a05a00a03a06/The-Parting-The-Courtship-of-Nellie-Fisher-1-by-Beverly-Lewis.pdf
    • http://muicuiu.dumb1.com/1

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