After Effects CC 2015 (13.7.0) had several post-release patches (13.7.1, 13.8.0). A portable repack will never receive these. You will be stuck with stability issues, memory leaks, and render glitches that were fixed years ago.
Always download software from trusted sources. Repackaged apps can sometimes contain malicious code if downloaded from untrustworthy sites. adobe after effects cc 2015 1370 portableby robert link work
Adobe After Effects CC 2015 13.7.0 Portable by Robert Link: A Work Solution for Motion Graphics After Effects CC 2015 (13
While users often seek "portable" versions to run software without installation or administrative rights, these distributions are not authorized by Adobe and carry significant security risks. Overview of After Effects CC 2015 (v13.7) adobe after effects cc 2015 1370 portableby robert link work