diff --git a/clusters/threat-actor.json b/clusters/threat-actor.json
index 52241f2e..52a55d7d 100644
--- a/clusters/threat-actor.json
+++ b/clusters/threat-actor.json
@@ -2670,7 +2670,6 @@
           "https://www.symantec.com/connect/blogs/russian-bank-employees-received-fake-job-offers-targeted-email-attack",
           "https://www.forcepoint.com/blog/security-labs/highly-evasive-code-injection-awaits-user-interaction-delivering-malware",
           "https://www.kaspersky.com/blog/financial-trojans-2019/25690/",
-          "https://www.group-ib.com/brochures/gib-buhtrap-report.pdf",
           "https://www.welivesecurity.com/2015/04/09/operation-buhtrap/"
         ]
       },