How attachments are created in SDM via non-secured URL when it is uploaded through Catalog during ticket creation.
CA Service Management : 17.X
In catalog
1.Administration->Configuration->ServerInformation
2.Administration->Configuration->CA Service Desk
In SDM:
1.Administration->OptionManager->CA ServiceCatalog
2.Administration->System->Servers
In PAM:
1.Operations->DataSet->CA SLCM->SLCM_GlobalDataset
All should be pointing/Enabled to HTTPS
After enabling as above attachments are saved with SSL URL.