This script mergers multiple PDF files into one. You MUST have Adobe PDF writer (https://www.adobe.com/products/acrobat/) installed on your computer.
Place your PDF files in the same directory with the Merge.vbs. Double click the Merge.vbs. The script will create a "Output.pdf" file. If you want to control the ORDER in which files are merged, just drag and drop your files onto Merge.vbs; the script will place it into the end of the "Output.pdf" file.