Can an image in a scanned document be reocgnized/selected as an object?

Hello,

Question: if a document is scanned (for example, a letter printed on company letterhead - with the company logo/graphic at the top), is Acrobat able to identify the logo/graphic as an object that can be selected?

Background: my office receives a lot of documents that need to be verified. Occasionally, unfortunately, not-so-honest individuals submit documents that have been manipulated. (There are some easy tells, but technology is also getting to be really good.) We recently received a document that was supposedly scanned (from an official paper copy), but I was surprised that I was able to mouse-over+click and select images in the document (like the logo in the letterhead and an official stamp near the signature). In my experience, images aren't usually select-able unless they're from a PDF of an electronic document, like a Word document saved as a PDF (i.e. scanned paper documents in PDF basically function more like an image). So ... is this possible? I know that there is a text recognition feature that would allow scanned text to select-able and be more or less editable; I wasn't sure if there was now something like an image recognition feature for scanned documents.

The alternative, of course, is that the scanned document has been tampered with, and that the images are select-able because they were added later. (I just want to be sure before I start asking uncomfortable questions about authenticity to the sender).

Thank you in advance for your help.