Custom orders management with files attached to emails

-- HikaShop version -- : latest

Hello, i have this task, that i need to be done:

eshop is selling various blood tests.
user orders a test, gets sample collection kit, takes samples and sends them back. the order number is issued by Hikashop.
Lab do the test and sends back an email with: some text in email body where you can find Order number and attached a pdf test report.

I need a component/plugin that will do the following:
Scan incoming email. If in incoming email body or subject founds Order number which is the same like in Hikashop orders, do the following:
a) saves this pdf in dedicated folder (not accessible by everybody) and ads Order number and User name to file name;
b) Changes order status and sends an email with some text to user with this new pdf like attachment.

Who can do that?