[Screenshot of the file](http://i.stack.imgur.com/qNYFU.png)I have a file which contains multiple lines 

```
Source Path                       Target Path

xxxx/out/reportname1.pdf         xxxx/out/Reports/reportname1.pdf
xxxx/out/reportname2.txt         xxxx/out/Reports/reportname2.txt
xxxx/out/reportname3.csv         xxxx/out/Reports/reportname2.csv

```

I would like to replace `/Reports/reportname1.pdf` to `/PDFReports/reportname1.pdf` for only PDF files. 

Please suggest I tried using `/Reports/.*pdf` and I am able to find it, but unable to replace it