Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26106822f756c35…

MALICIOUS

PDF

15.9 KB Created: 2019-05-03 05:52:15 +01:00 Authoring application: mPDF 5.7
MD5: 757f53a528af9a30e104c0d44f21d06b SHA-1: 1a43253d4da6fa50bf622a76f754a762ac129c1d SHA-256: f26106822f756c355d70406d6eb3dececa059d7c5d73a15560bedd4aac2c967e
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing:Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, directing users to external PDF files. While the ML classifier strongly indicates maliciousness, the specific intent beyond link farming is unclear as no scripts were extracted. The embedded URLs, though flagged as confirmed benign, are part of the link farm strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9892

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/1a00a06a01a09a02a01/Wonder-of-Wonders-Christmas-with-Dietrich-Bonhoeffer-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a01a02a06/Voices-in-the-Night-The-Prison-Poems-of-Dietrich-Bonhoeffer-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/4a05a02a07a00a07/Christmas-Sermons-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a01a02a04/Dietrich-Bonhoeffer-s-Christmas-Sermons-by-Edwin-H-Robertson.pdf
    • http://muicuiu.dumb1.com/4a05a00a08a00a01/A-Testament-To-Freedom-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/1a03a08a02a09a06/Sanctorum-Communio-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/3a04a01a03a05/The-Cost-of-Discipleship-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/1a00a06a01a09a07a00/Love-Letters-from-Cell-92-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/1a00a06a01a09a02a03/Psalms-The-Prayer-Book-of-the-Bible-by-Dietrich-Bonhoeffer.pdf
    • http://muicuiu.dumb1.com/1a00a06a01a09a06a07/Heroes-of-the-Faith-Dietrich-Bonhoeffer-by-Michael-Van-Dyke.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a01a01a06/Dietrich-Bonhoeffer-Reality-and-Resistance-by-Larry-L-Rasmussen.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a01a02a09/The-Twisted-Cross-and-Dietrich-Bonhoeffer-by-Thomas-E-Patten.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a01a02a07/The-Life-and-Death-of-Dietrich-Bonhoeffer-by-Mary-Bosanquet.pdf
    • http://muicuiu.dumb1.com/1a00a06a01a09a02a04/Dietrich-Bonhoeffer-In-the-Midst-of-Wickedness-by-Janet-Benge.pdf
    • http://muicuiu.dumb1.com/1a01a00a07a00a01a04/In-Der-Gewissheit-Seiner-Gegenwart-Dietrich-Bonhoeffer-Und-Die-Spur-Des-Vermissten-Gottes-by-Werner-Kallen.pdf
    • http://muicuiu.dumb1.com/1a00a06a01a09a06a08/Marlene-Dietrich-Photographs-and-Memories-by-Marlene-Dietrich-Collection.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a01a02a05/The-Dietrich-von-Hildebrand-LifeGuide-by-Dietrich-von-Hildebrand.pdf
    • http://muicuiu.dumb1.com/8a07a05a08a02a09/Bonhoeffer---Widerstand-und-Ergebung-by-Mario-Hartmann.pdf
    • http://muicuiu.dumb1.com/8a03a04a00a02a07/Bonhoeffer-Pastor-Agent-M-rtyrer-und-Prophet-by-Eric-Metaxas.pdf
    • http://muicuiu.dumb1.com/1a00a06a01a09a06a09/Dietrich-by-Ean-Wood.pdf
    • http://muicuiu.dumb1.com/1a00a06a02a01a02a

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