Today I had to get a set of files into a vCloud Director vApp with no internet-facing network.
I found the easiest thing to do was to use ISO Creator (the Windows 7 version ran fine on 8.1) to create an iso file (changing the default BR type to CD) from the folder creating the files, then upload to the vCD Catalog and attach to the VM.
I got ISO Creator from here;
http://isorecorder.alexfeinman.com/W7.htm
I hit problems trying to use the (at time of writing) latest versions of Chrome and IE on Windows 8.1 64 bit, and instead used OVFTool to do it. Here is the syntax I used;
"c:\Program Files\VMware\VMware OVF Tool\ovftool.exe" --sourceType="ISO" --vCloudTemplate="false" "D:\downloads\files.iso" "vcloud://jgriffiths:MyPassword@myVCDportal.mydomain.com?vdc=Org_vDC&org=MyAwesomeORG&media=MyFiles&catalog=MyCatalog"
Replace the things in bold as appropriate.