Is there a way to send links to attachments on just the 1st row through automated workflows?

I have an Alert Someone workflow which sends a mail with an attachment when a check box is checked in each row. This attachment is the same file.

There are thousands of rows, hence adding this file as a row attachment to each row would be very difficult. Is there a way to send this file attached to the 1st row of the sheet when the automation is triggered on any row?

Thank you