If you are using a demo version of the service, the Reporting service has several limitations. For more information, see section About the license.
Master files are ZIP archives that contain all YARA/IOC files from all reports related to the selected Actor profile and which are available depending on the user's permissions.
To download Master files:
The Actor YARA and Actor IOC buttons are displayed.
Actor YARA and Actor IOC buttons are active (clickable) if there are files to be included in the archives and you have permissions to download Master files for Actor profiles.
The actor-master-yara.zip archive is downloaded.
The actor-master-ioc.zip archive is downloaded.