How To Check Virus Online by Uploading File?

By WP Saviour •  Updated: 03/04/21 •  6 min read

Do you promote any digital items on-line? Have you ever obtained any criticism from few customers saying their Antivirus is obstructing the file?

Right here at Saviour, I promote few e-books (Free + Paid) & plugins. I exploit Mac OS, because it’s safer than Home windows. Evidently, I’m little paranoid about safety. I guarantee my system stays secure by utilizing inbuilt Mac Firewall & avoid downloading recordsdata from unreliable sources.

Getting again to why I ended up trying to find on-line virus scanner:

Saviour free WordPress Information eBook has been downloaded greater than 5000 occasions and prior to now 2 months, I obtained 2 emails saying that their antivirus software program (Avast to be exact) disabled the file entry. Right here is the e-mail that I obtained:

This was one thing unlikely to occur & I began digging extra into this problem. The very first step was to test if the file is contaminated or not. (Do learn the second part to study virus false constructive detection).

My requirement was easy, as I wanted one instrument that might test the database of all standard antiviruses & detect any viruses, worms, trojans or malware in my uploaded file.

Whereas I used to be researching for the instrument, I landed on a fairly superior instrument & additionally some attention-grabbing findings that you may be studying on this article.

Web page Contents

VirusTotal: An internet Software to test a file to Viruses or Malware

VirusTotal is a free on-line virus checker instrument the place you’ll be able to add any file & it could check it for the presence of viruses, worms, trojans, and all types of malware. Together with file add, you may also test any on-line web site/URL & discover out in the event that they include any viruses. That is helpful for bloggers as they usually get warning that their website has been compromised, and with Virustotal you’ll be able to shortly test your web page to make clear your suspicion.

The instrument is fairly straightforward to make use of. You possibly can head to their homepage; click on on “select file” to add any file out of your pc (As much as 128 MB) & click on on Scan it.


The instrument will analyze your file with all standard antiviruses & present you the end result on the subsequent web page together with detected warning. Here’s what occurred once I scanned considered one of my ebooks:


Though Virustotal advised this file to be innocent, however Avast anti-virus was displaying “PDF:UrlMal-inf [Trj]” error. Which means any person who has Avast anti-virus will get a warning similar to Digitalud obtained one above.

What’s PDF:UrlMal-inf [Trj] & repair?

That is the place issues get attention-grabbing as I began researching extra about PDF:UrlMal-inf [Trj] warning. After a little bit of probing, I obtained the answer from Avast official assist as many different customers confronted the same warning.

One person who was utilizing iCloud to create a To-do checklist for himself additionally obtained such warning. Here’s what Kevin skilled:


So the difficulty is with the Net defend module of Avast Antivirus & a response from Avast employees made the state of affairs clear.

That is what Avast assist employees advised:

Hi there,
This detection implies that the PDF comprises some URL that’s blocked. For more information ship us the PDF via -> Avast Virus Lab

Normally, a PDF file has many weblinks & if there may be any hyperlink that’s blocked by Avast, they’ll block the file entry with the warning. This problem might occur with any Phrase doc or any file that comprises a hyperlink to an internet site that’s blocked by Avast database.

At this second, I couldn’t discover a useful resource on-line which might let me test which URL is that, so here’s what I did & hope it could assist anybody in the same situation like me.

Head over to Avast assist & create a assist ticket. Allow them to know concerning the problem & additionally connect the file that’s blocked by Avast or displaying PDF: UrlMal-inf [Trj] problem in VirusTotal. That is what I emailed them:


Now, all you’ll want to do is await Avast assist staff to answer again & you’ll be able to take away the URL that’s blocked by them. In Kevin’s case, it was a preferred website known as

One other workaround:

Right here is one other workaround which might work when you will have few hyperlinks in your pdf or doc file. You possibly can take away all hyperlinks & add them one after the other. After including each hyperlink, both use VirusTotal or scan it utilizing Avast on-line scanner to search out the hyperlink that’s blocking. At this second, the one suggestion is to take away the hyperlink out of your file & notify the Web site proprietor about this problem. In a lot of the circumstances, the web site proprietor will attain out to Avast staff to whitelist their web site.

Bonus tip for Web site house owners who’re blocked by Avast Net-shield:

More often than not Avast blocks an internet site as a result of your server I.P. may be listed in Anti-spam database. This is quite common with shared internet hosting customers who’re sharing identical I.P. with over tons of of different websites. You possibly can test utilizing Blacklist checker instrument to see in case your server I.P. is banned in any of the spam databases.

Right here is test in case your web site I.P. is blacklisted.


I hope this could offer you a whole lot of new views if you find yourself promoting any digital items on-line, or your web site is being marked as a suspicion by any antivirus or firewall software program’s.

gp-9111119 as-2757552

WP Saviour

I am a WordPress specialist. My mission is to help you create beautiful websites with ease!