If I say legally, then you can't because breaking someone's privacy is not good but if you are the owner of the pdf and you forget the passward then I suggest you. Go to any online pdf passward remover site like PDFfiller.com - A Free Solution to all your PDF Problems or iLovePDF | Online PDF tools for PDF lovers, here you can remove some weak and medium passward protected pdf.If the passward is too strong then those wil not be able. Thank you, follow me for more tips and tricks
To access Passkey for PDF, you shall first download it. 1. Click here for Passkey's Website. 2. Click on the download button. 3. Save the downloaded file to your desktop. 4. Double-click on the file to open it. 5. Then press the button at the top, 'Passkey'. 6. Follow the on screen instructions to start the Passkey software. Passkey for PDF will use two PDF files to crack the password, PDF1 and PDF2 Note: Passkey for PDF will not crack a password on all computers because it will fail if the PDF file contains any spaces, special characters, etc. To overcome this, use a PDF generator such as PDF to Crack, which will generate a custom PDF file that will allow you to crack the PDF password. Download: PDF to Crack 1. How to Crack PDF Password PDF Password Crack is only applicable if you are able to crack.