You should add a Field Value Comparison condition. This lets you only fire the rule if a field has a certain value.
For Condition Parameters set the following values:
Field: Group Contact Status
Operator: is equal to
After asking Jaap from Civicoop, maintainer of the extension, it seems that the option of sending multiple pdf from a civirule is not yet possible. It's meant to be used from the API v3 interface. But with small additional development, it would be easy to have it as an option in CiviRule.