Hi Andrej,
You can generate a adobe form or MS word document in crm and can send the document as attachment through mail to the user.
I have done a requirement that we need to send the adobe form to a partner in the service order.
We have created an action.
You Can use this class "cl_document_bcs" for creating document,for attaching etc by using the respective methods.
Thanks & Regards,
Vishnu