How to read email and Phone number in pdf or any attachment file and save Data in salesforce?

for (Messaging.Inboundemail.BinaryAttachment bAttachment : email.binaryAttachments) {

Attachment attachment = new Attachment();
// attach to the newly created contact record
attachment.ParentId = contact.Id;
attachment.Name = bAttachment.filename;
attachment.Body = bAttachment.body;
insert attachment;
}