Faizan Makrani

[pdf_digital_signature_timestamp.pdf](https://github.com/jsvine/pdfplumber/files/10063531/pdf_digital_signature_timestamp.pdf) [sample01.pdf](https://github.com/jsvine/pdfplumber/files/10063534/sample01.pdf) Here you find the sample pdfs with digital signature in it...Thanks @jsvine

Please refer this library also for the reference...This library have much more functionality for digital signature validation and fetching all types of information of signature and certificate...! https://www.example-code.com/chilkat2-python/pdf_signatures.asp