Cat=225 in ID 99 logs

Hi guys,

I'm seeing a log in my fortiproxy where the traffic is denied due to 403 and the category is cat=225. Any idea what is this cat=225? I don't see this category anywhere in the web filter. Could 225 be a customized category in my fortiproxy? 

FortiGuard web filter categories | FortiGate / FortiOS 7.6.1 | Fortinet Document Library

Thanks!