Unwanted Context menu item

Hello to everybody!
I would like some help with a Context menu item that I can't get rid of.

Since I tried an application (Master PDF Editor 5), the item ''Open with Master PDF Editor 5'' has been added to the Context menu. When I right click on a pdf file, I see this item right after Open. It's not big deal but it's quite annoying visually, since I don't use the app.
The application I tried, wasn't even installed, it was a portable version. Nonetheless, it apparently made some registry entries.
I run Regedit and I deleted everything relevant (and I reboot) but it's still there.
I also used ShellExView but I didn't find something that matches.

Any idea?

Thanks in advance!

Windows 1 Home (ver. 2004)

Skakner said:

I run Regedit and I deleted everything relevant (and I reboot) but it's still there.

Have you found the following item via Regedit?

Skakner said:

the item ''Open with Master PDF Editor 5''

Skakner said:

(Master PDF Editor 5)

Is it possible to share the download link here?

Hi Matthew!

I don't remember the source of the portable version but this is the app.
I didn't find the exact item (Open with Master PDF Editor 5) but I found a couple of relevant registry entries (there was Master PDF Editor 5 in their name).

Skakner said:

I don't remember the source of the portable version but this is the app.

It does not provide a portable version.

Try using the following to clean your Registry: Latest CCleaner Version Released

Also have a look at the following:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\OpenWithList

I removed two more entries.

HKCR\Applications\Master PDFEditor.exe\shell\open
HKCR\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.pdf\OpenWithList

The fisrt one was detected by CCleaner, the second one was find by me using the useful tutorial.
Unfortunately, after reboot, item is still there...

HKLM\SOFTWARE\Classes\*\OpenWithList
HKLM\SOFTWARE\Classes\.pdf

Matthew Wai said:

HKLM\SOFTWARE\Classes\*\OpenWithList
HKLM\SOFTWARE\Classes\.pdf

- Nothing there
- Two more removed manually
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Compatibility Assistant\Store
HKEY_CURRENT_USER\SOFTWARE\Classes\Local Settings\Software\Microsoft\Windows\Shell\MuiCache
- CCleaner repaired all Registry issues

...but still there...

Can we assume that the item is not in Registry?

Where else could it be?