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Verdict Malicious

Analyzed , 1 month ago

Is PDF_C4727_[number].img safe? No, we rate this exact file malicious.

ISO image submitted when we scanned it on Sep 7, 2026 triggers six major antivirus engines on the MalwareX family.

Read the whole reasonShow less

Strong evidence · Two or more major antivirus engines agree.

Don't open this file

Treat the file as malicious; delete it and do not execute or mount the ISO.

What to do now4 steps

This file is harmful. Don't run it, and remove it.

If you haven't opened it

  1. Don't open this file. Delete it, then empty the Recycle Bin or Trash.

If you already opened it

  1. Disconnect the device from the internet, then run a full scan with your security software.

  2. If you typed passwords on the device after running it, change them from another device you trust.

  3. If the scan keeps finding it, or the device still acts strangely, scan again with a second-opinion scanner from another company; if that doesn't fix it, back up your personal files and reinstall the operating system.

If you already ran it, do these in order.

If you opened or installed it

Avoid banking and sign-ins on that device until it is clean. These free MalwareTips guides walk you through it.

Paste this report's link in your topic so helpers can see what was found.

Why we think so

Share this file report

PDF_C4727_[number].img: Malicious — MalwareTips file scan

The link always shows the latest result for this exact file (its SHA-256 fingerprint).

Reads the latest antivirus results for this file's hash. Nothing is uploaded.

Antivirus results

17 of 62 flagged

  • Flagged 17
  • No detection 45
  • No result 13
FilePDF_C4727_[number].img5.4 MBSHA-256 34988cc93521…d1ef0c
  • Code signing Not applicable
  • Test run Not run
  • First seen 1mo ago
17 of the 62 antivirus engines that checked it flag it, including ESET and Bitdefender.

Chapter 02

Why we think so

3 points against it and 0 in its favour, checked against the scan evidence.

MT AI Engine · Verdict analysis

The reasoning behind this verdict

Analyst conclusion

Six major antivirus engines and two more smaller engines flag the file as MalwareX-gen or Yogi variants. The sample is a rare ISO image with no prior history or sandbox data.

6 sources checked · 4 complete · 1 not run · 1 not needed or not applicable. See every source

Chapter 03

What it did in our test

No completed test run is saved for this file.

Threat context

How trojans work

A trojan pretends to be something useful or harmless so that you run it. Once open, it does its real job in the background, from stealing data to opening a back door or downloading more malware.

Bottom line:The disguise is the whole trick, so a trustworthy-looking name or icon means nothing.

Chapter 04

Technical details

17 of the 62 antivirus engines that checked it flag it.

Sources checked

Every check behind this verdict

6 sources checked · 4 complete · 1 not run · 1 not needed or not applicable. Complete means the check returned a usable result; it does not mean the file is safe.

SourceStatusResultChecked
Antivirus enginesVirusTotal · 75 enginesCompleteRisk signal: 17 of 62 engines flagged it · 13 gave no result Details for antivirus engines
Sandbox runVirusTotal sandboxesNot runNo sandbox run is recorded for this fileNo date recorded
Contacted hostsMalwareTips URL scannerNot neededNo sandbox run, so there were no contacted hosts to checkNo date recorded
Signature rulesYARAify community rules + MalwareTips rulesCompleteNo rule matched
Malware sample databaseabuse.ch MalwareBazaarCompleteNot listed
Known-software referenceCIRCL hashlookupCompleteNo match

Engines that flagged it 17

  • Avast (major engine)Win64:MalwareX-gen [Trj]
  • AVG (major engine)Win64:MalwareX-gen [Trj]
  • Avira (major engine)TR/W64.MalwareX
  • BitDefender (major engine)Gen:Variant.Yogi.73364
  • Emsisoft (major engine)Gen:Variant.Yogi.73364 (B)
  • ESET-NOD32 (major engine)Win64/Agent.KUX trojan
  • F-Secure (major engine)Trojan.TR/W64.MalwareX
  • Fortinet (major engine)W64/Agent.KUX!tr
9 more in the full engine list

File fingerprint

Last analyzed
Sep 7, 2026, 4:28 AM UTC
SHA-256
34988cc93521e73f967a82849c4ae8075ad396e59590d60bfee40c94b8d1ef0c
SHA-1
39e58dd09ef256849eca0cf78dff6d524c973d20
MD5
a8c6ef6b650ce0813ad3cd07002c77d5

About this file

PDF_C4727_[number].img is an ISO image file of 5.4 MB.

Type and size
ISO image · 5.4 MB
Signer
Not applicable
First seen
Sep 7, 2026On VirusTotal.
Submitted by
1 sourceRarely seen: few people have submitted this exact file.

First scanned

Chapter 05

Questions & answers

Short answers to the 8 questions people ask most about this file.

Is PDF_C4727_[number].img malware?
Yes. This copy of PDF_C4727_[number].img (SHA-256 34988cc9…ef0c) is malicious. Other files with the same name can be different, so check the hash. Don't open it. Delete it, then empty the Recycle Bin or Trash. 17 of the 62 antivirus engines that checked it flag it. Antivirus engines classify it as a trojan: malware disguised as something harmless so that you run it. If you've already opened it, see the steps below.
What is PDF_C4727_[number].img?
PDF_C4727_[number].img is a file, about 5.4 MB. VirusTotal first saw it on Sep 7, 2026.
How many antivirus engines detected PDF_C4727_[number].img?
17 of the 62 antivirus engines that checked it flag PDF_C4727_[number].img, including ESET and Bitdefender. We weigh which engines flagged it and what else the scan found, not just the count. The rating comes from all the evidence together, not from this count alone.
I already downloaded and opened PDF_C4727_[number].img — what should I do?
Act quickly. 1) Disconnect the device from the internet. 2) Run a full scan with your antivirus and let it remove what it finds. 3) Change your important passwords from another device you trust, starting with email and banking, and turn on two-step verification. 4) If you bank or shop on this device, watch your accounts and tell your bank about payments you don't recognise. 5) If the scan keeps finding it, back up your personal files and reinstall the operating system.
How do I remove PDF_C4727_[number].img?
To remove PDF_C4727_[number].img: 1) Delete it, then empty the Recycle Bin or Trash. 2) Run a full scan with your security software. 3) Check the programs that start automatically for anything you don't recognise.
What kind of malware is PDF_C4727_[number].img?
Antivirus engines classify PDF_C4727_[number].img as a trojan: malware disguised as something harmless so that you run it.
What is the SHA-256 hash of PDF_C4727_[number].img?
The SHA-256 fingerprint of PDF_C4727_[number].img is 34988cc93521e73f967a82849c4ae8075ad396e59590d60bfee40c94b8d1ef0c, and its MD5 is a8c6ef6b650ce0813ad3cd07002c77d5. Two files with the same SHA-256 are identical, so use it to check you have exactly this file, not just one with the same name.
How up to date is this analysis of PDF_C4727_[number].img?
This report reflects the scan on Sep 7, 2026. A file's fingerprint never changes, but antivirus engines keep learning, so a rating can change later. To get a newer result, scan the file again: we refresh the antivirus results when the saved ones are out of date.
Chapter 06

Community

Member reviews and reports for this exact file hash.

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This report and its SHA-256 fingerprint are public, so the next person who checks the same file gets an instant answer; documents and images are listed by type instead of their file name. A file we had not seen before is uploaded to VirusTotal, whose security partners and subscribers can download it; MalwareTips deletes its own copy after the scan. If you ran this file and are worried, scan your device with up-to-date security software.