Search code examples
javapdfbox

How to load secured PDF file by pdfbox, if I don't know the password?

PDDocument has the load(InputStream input, String password) method to load secured PDF file but I have no idea about the password.

This secured PDF file can be opened directly by Chrome or Adobe Acrobat, even it can be copied or edited. This confuses me.

Here is an example secured PDF file: https://bigdata-s3.wmcloud.com/jyresearchreport/juling/report/0000000000000jr9o2.pdf

My question is how this secured PDF file can be edited and how can it be loaded if I have no idea about password?

Solution

  • PDFBox 2.0.16 had sovled this problem.