A few weeks ago I posted a request for packets for the above ports, a big thanks to all that provided information. 

Whilst still not 100% confirmed it looks like 8909 and 9415 are associated with open proxies.  I've seen some IPs that look for open proxies hit 8909 and 9415 as well as the normal proxy ports. 

27977 is still a bit of a mystery, the packets received were all associated with normal traffic that happened to use this port as a source port. 

UDP /7 was an interesting one.  I only received 8 packets that were relevant and these were interesting.  512 bytes long, After the header the first two bytes count up, the second two bytes count down and the rest of the packet is all 000's.  Likely because there was nothing to interact with.  Would dearly love some additional packets for this port.  

If you can help out submit the packets through the contact form and thanks in advance. 

Mark