Jh26974.7z Instant

Since .7z is a compressed format, you cannot simply rename it to .pdf or .docx . You must use a specialized tool:

Archives named with specific alphanumeric strings (like jh26974 ) are often found in: jh26974.7z

To access the "proper paper" or documents inside, you will need to extract the contents using an archiver that supports the .7z extension. How to Open the File Since .7z is a compressed format