Good afternoon.
After Splunk upgrade from 7.3.0 to 8.0.4 version in PDF reports instead Cyrillic words appears different symbols in using Cyrillic. On 7.3.0 version it helped in splunk / share / splunk / fonts / tahoma.ttf.
It doesn't work in current time but with permissions for splunk / share / splunk / fonts / tahoma.ttf everything is ok.