I have never used SSRS, so no idea how it exports.
However, you could attempt to set the application new_Workbook event to trap any new workbook that is opened and check it for some clue/feature that it is a product of the SSRS report tool.
Eg. You could check the workbook name(if there is a clear indication that it's a product of that tool.If you save upon export as something like "mySSRS_Report20160628.xlsx", then you could check for the "mySSRS_" string.
In order to do this you would have to have the 'pagename' appearing consistently in the same cell of the generated sheets, like $A$2 in my example.
You will need an add-in , so open a brand new workbook and make a new class module called cAppEvents and put this in it:
Option Explicit
Private WithEvents app As Application
Private Sub app_WorkbookOpen(ByVal Wb As Workbook)
Dim i As Long
If InStr(1, Wb.Name, "mySSRS_", vbTextCompare) Then
For i = 1 To Wb.Worksheets.Count
Wb.Worksheets(i).Name = Wb.Worksheets(i).Range("A2").Value
Next i
Wb.Save
End If
End Sub
Private Sub Class_Initialize()
Set app = Application
End Sub
In the ThisWorkbook module of that workbook put this code in:
Private newApp As cAppEvents
Private Sub Workbook_Open()
Set newApp = New cAppEvents
End Sub
Save it off as an Excel add-in. Go to File-->Options-->Addins to manage your add-ins, and check the box with the filename
Test with opening up workbooks with the name having the string "mySSRS_" in them, and with some relevant data in the cell $A$2.
You get the idea....