Where does these date originate from

The date field “Last updated” and “Created time” when viewing files linked to assets does not reflect any information I find in the file itself. Where do these fields originate. 2017 is long before our CDF instance was created so it is a bit strange.

These are the datetimes from the file header:

{
  "name": "SKA-AK-ER300-P-XB-0003-001.pdf",
  "sourceModifiedTime": 2021-01-25 01:30:44,
  "uploadedTime": 2024-10-02 06:07:37,
  "createdTime": 2024-05-01 02:46:45,
  "lastUpdatedTime": 2024-10-11 09:00:04,
  "uploaded": true
}