How to remove PDF Security of PDF generated with ADS

Hi gurus,

We are facing and strange issue. We have a production system that come across of a company split, so we have a lot of things configured that we don't know what this configuration was made.

So, when we are generating a print preview of an invoice through VF02 tcode, the PDF apears but when we try to print that PDF or save to local disk and print we can't, as the security options of the PDF denies printing. The document has also a password enabled.

The system is ECC 6.0 EHP 7 with ADS 11.0 any clue how to remove that password or re-enable the print button?

Thanks from Spain. Regards