Quarantined file disappeared from the manager

I was going to start a new discussion, but for some reason the New Message button is not active for me now in either Safari of Firefox.

I just found something odd: I noticed Sophos had run, and when I clicked on it in the Dock, the QM opened. There were 4 files listed and 3 quickly vanished, while 1 remained, identified as Mal/ObfJS-B. When I clicked the name, the corresponding Sophos page opened in Safari, and on that page I found the submission link.

The path for the threat was in the Firefox cache, and I decided to copy it to a new Quarantine folder so I'd have a sample - I didn't want to move or delete this file before I checked it out more. But when I try to copy it, I get an error message every time: The operation couldn’’’’t be completed. (OSStatus error -128).

This is happening in Path Finder, which I use instead of Finder whenever possible. The name of this file is B9031d01, and has no extension but is listed as a document.

I was unable to open it with TextEdit - says I don't have permissions, even though the owner and group are the usual document permissions.

Anyway, the preview pane in Path Finder only shows a blank page for this file, I can't see any text or get any insight as to what's in it.
When I scan this file in Path Finder, a threat is shown every time.
So I cheched this file in Finder and it got interesting:
In Finder, it shows up a tiny little image from some website I've visited. When I scan this file in Finder, there is no threat shown.

I can open this image in Preview.

Now I'm wondering if there's some sort of conflict between Sophos and Path Finder, that doesn't allow proper scanning or misidentifies files as threats.
I recovered the 2 gifs from Time Machine that Sophos had previously identified as threats, and when I scan them now, Sophos does not identify them as threats, either in Finder or Path Finder.

The image that is being identified as a threat in the Firefox cache, is the IconsPedia logo at the very top left of this page Iconspedia.

Sophos keeps alerting on this every time it runs. I downloaded the logo and scanned it, and no threats are found (as expected).

Why does Sophos think it's a threat in the FF cach in Path Finder, but not in a different folder in Path Finder and not in Finder?

I tried to include screenshots, but they aren't showing up - something wrong with this forum. I tried 3 image hosting sites, but nothing shows up when I use the Insert/edit Image button.

I was going to start a new discussion, but for some reason the New Message button is not active for me now in either Safari of Firefox.

I just found something odd: I noticed Sophos had run, and when I clicked on it in the Dock, the QM opened. There were 4 files listed and 3 quickly vanished, while 1 remained, identified as Mal/ObfJS-B. When I clicked the name, the corresponding Sophos page opened in Safari, and on that page I found the submission link.

The path for the threat was in the Firefox cache, and I decided to copy it to a new Quarantine folder so I'd have a sample - I didn't want to move or delete this file before I checked it out more. But when I try to copy it, I get an error message every time: The operation couldn’’’’t be completed. (OSStatus error -128).

This is happening in Path Finder, which I use instead of Finder whenever possible. The name of this file is B9031d01, and has no extension but is listed as a document.

I was unable to open it with TextEdit - says I don't have permissions, even though the owner and group are the usual document permissions.

Anyway, the preview pane in Path Finder only shows a blank page for this file, I can't see any text or get any insight as to what's in it.
When I scan this file in Path Finder, a threat is shown every time.
So I cheched this file in Finder and it got interesting:
In Finder, it shows up a tiny little image from some website I've visited. When I scan this file in Finder, there is no threat shown.

I can open this image in Preview.

Now I'm wondering if there's some sort of conflict between Sophos and Path Finder, that doesn't allow proper scanning or misidentifies files as threats.
I recovered the 2 gifs from Time Machine that Sophos had previously identified as threats, and when I scan them now, Sophos does not identify them as threats, either in Finder or Path Finder.

The image that is being identified as a threat in the Firefox cache, is the IconsPedia logo at the very top left of this page Iconspedia.

Sophos keeps alerting on this every time it runs. I downloaded the logo and scanned it, and no threats are found (as expected).

Why does Sophos think it's a threat in the FF cach in Path Finder, but not in a different folder in Path Finder and not in Finder?

I tried to include screenshots, but they aren't showing up - something wrong with this forum. I tried 3 image hosting sites, but nothing shows up when I use the Insert/edit Image button.