Malicious PDF — malware analysis report

Static analysis result for SHA-256 82fb70b87fdc0226…

MALICIOUS

PDF

20.8 KB Created: 2019-05-03 06:26:30 +01:00 Authoring application: mPDF 5.7
MD5: da2e4b14cd8e8aa27db46fe05a4cd42f SHA-1: b28bb279b73a0aeea776a99a6c900eb7bb5b782b SHA-256: 82fb70b87fdc02260ae9703498e99ce43297c971dd15a66d6b97c5e48b89611d
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the presence of a visual download button lure and the link farm suggest an attempt to direct users to malicious content, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/6a04a00a06a04a08/Sermons-Particularly-Addressed-to-Young-Women-in-the-Higher-Ranks-of-Life-by-a-Lady-by-Sermons.pdf
    • http://muicuiu.dumb1.com/6a04a00a06a04a03/Sermons-in-Brief-from-the-Ms-Notes-of-a-London-Clergyman-by-Sermons.pdf
    • http://muicuiu.dumb1.com/6a04a00a06a04a09/Sermons-by-a-North-Wilts-Rector-by-Sermons.pdf
    • http://muicuiu.dumb1.com/1a01a07a04a02a03a07/Sermons-of-Grace-Sermons-from-Grace-Episcopal-Church-in-Charleston-South-Carolina-2012-2014-by-John-Zahl.pdf
    • http://muicuiu.dumb1.com/5a07a03a04a00a09/Sermons-on-the-Lessons-the-Gospel-or-the-Epistle-Vol-2-For-Every-Sunday-in-the-Year-Preached-in-the-Parish-Church-of-Hodnet-Salop-by-Reginald-Heber.pdf
    • http://muicuiu.dumb1.com/5a07a03a04a01a02/Sermons-on-the-lessons-the-Gospel-or-the-Epistle-for-every-Sunday-in-the-year-for-week-day-festivals-preached-in-the-parish-church-of-Hodnet-ed-by-sir-R-H-Inglis-by-Reginald-Heber-bp-of-Calcutta-.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a08a03a00/The-Sermons-of-Mr-Yorick-Vol-6-by-Laurence-Sterne.pdf
    • http://muicuiu.dumb1.com/4a05a02a07a00a07/Christmas-Sermons-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a07a07a09/The-Sermons-of-Mr-Yorick-Vol-V-by-Laurence-Sterne.pdf
    • http://muicuiu.dumb1.com/6a04a00a04a06a00/Sermons-and-Soda-Water-by-John-O-39-Hara.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a07a05a06/The-Sermons-of-Mr-Yorick-Volume-4-by-Laurence-Sterne.pdf
    • http://muicuiu.dumb1.com/6a04a00a07a03a00/Farm-Sermons-by-Charles-Haddon-Spurgeon.pdf
    • http://muicuiu.dumb1.com/6a04a00a04a06a06/The-Overcoming-Life-and-Other-Sermons-by-Dwight-L-Moody.pdf
    • http://muicuiu.dumb1.com/1a01a04a09a07a05a05/The-Sermons-of-Mr-Yorick-Volume-3-by-Laurence-Sterne.pdf
    • http://muicuiu.dumb1.com/3a00a01a05a04a05/Beyond-Armageddon-Twenty-One-Sermons-to-the-Dead-by-Walter-M-Miller-Jr-.pdf
    • http://muicuiu.dumb1.com/6a04a00a04a03a05/The-Gnostic-Jung-and-the-Seven-Sermons-to-the-Dead-by-Stephan-A-Hoeller.pdf
    • http://muicuiu.dumb1.com/8a02a00a01a02a01/Evangelistic-Sermons-at-Aberavon-by-D-Martyn-Lloyd-Jones.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a01a02a04/Dietrich-Bonhoeffer-s-Christmas-Sermons-by-Edwin-H-Robertson.pdf
    • http://muicuiu.dumb1.com/5a06a06a06a06a05/The-Pillars-of-Truth-A-Series-of-Sermons-on-the-Decalogue-by-Erastus-O-Haven.pdf
    • http://muicuiu.dumb1.com/6a04a00a07a03a06/Sermons-Biblical-Wisdom-For-Daily-Living-by-Peter-J-Gomes.pdf