Metadata in pdf printing

We did some pdf printing for a competition where empty metadata in pdf files was a condition . Controlling the files I found that my name and rhino filename where embedded in the file but found no option to avoid this feature. Did I miss something ? If not maybe a Boolean tick to remove that data could be useful.

Right. Rhino has no tool for that.
Maybe you can edit/remove that data using Adobe’s PDF toolkit or a similar tool?