Any Bank Statement PDF you’ve received is Password-Protected. Because these PDF files contain confidential information about the account, they must be password protected. Knowing every PDF password is a hassle, especially if you simply want to store these docs for your CA tax return. Remove Password from Pdf You can totally remove passwords from PDF files. To remove passwords from PDF files, you must first know the password. Before opening a secure password-protected PDF know how to remove a password from a PDF file.