If you received an email with a file named claiming to be a "useful paper":
or code repositories shared between researchers. 56936.rar
Use a service like VirusTotal to check the file before interacting with it. If you received an email with a file
from specific university portals or file-sharing sites. 56936.rar
If you can tell me the or author you are researching, I would be happy to find the actual PDF or academic source for you!