I have the (cannon Pixma iP4000 printer) helpkicker.exe file but in a different location C:\BJPrinter\CNMWINDOWS\Canon PIXMA iP4000 Installer\Inst2, this however isn't detected by avast (see image).
What avast! version and VPS file (virus database) number, e.g. 0630-2 (see about avast!) ?
Beside the link Frank gave you there is another you could try.
Jotti - Multi engine on-line virus scanner if any other scanners here detect them it is less likely to be a false positive.
You can't do this with the file in the chest, you will need to move it out.If it is indeed a false positive, add it to the exclusions lists (Standard Shield, Customize, Advanced and Program Settings, Exclusions) and periodically check it (scan it in the chest), there should still be a copy in the chest even though you restored it to the original location. When it is no longer detected then you can also remove it from the Standard Shield and Program Settings, exclusions.
Also see
(Mini Sticky) False Positives, how to report and what to do to exclude them until the problem is corrected.