GridinSoft Threat Intelligence
cjpeg-calibre.exe threat report
GridinSoft Anti-Malware detection
Detected by GridinSoft before you download
The current ThreatInfo record shows this exact file hash detected as Trojan.Heur!. Download GridinSoft Anti-Malware to scan the device, confirm whether this file is present, and remove the detected object if it is found.
- Detection name
- Trojan.Heur!
- Recommended action
- Scan and remove
- Last analysis
- 2026-05-20 17:00:29 (a week ago)
- File hash
- 77a808aa2602dea022cd2f5db00275d4
Why it matters
Why GridinSoft flags this file
GridinSoft identifies the sample as Trojan.Heur!, part of the Trojan threat category.
Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.
First seen 2026-05-20 17:00:29 (a week ago); latest analysis 2026-05-20 17:00:29 (a week ago).
ThreatInfo has seen this file in user or system paths listed below. Unexpected locations increase the need for local verification.
Recommended action
What to do next
- Compare the MD5 above with the file found on the device.
- Check whether the file appears in the observed locations or under one of the alternate names.
- Run GridinSoft Anti-Malware to confirm the detection and remove the file if it is present. Review the Trojan category for related samples and common context.
File context
cjpeg-calibre.exe is a Windows file recorded in the ThreatInfo database. The current detection status is Trojan.Heur!, based on the latest analysis from 2026-05-20 17:00:29 (a week ago). ThreatInfo groups this verdict with Trojan reports for broader family-level investigation.
If cjpeg-calibre.exe appears on your computer unexpectedly, treat it as suspicious. Check its location, digital signature, and recent system changes before allowing it to run. A full anti-malware scan is recommended when this file is detected as Trojan.Heur!.
File Details
| MD5: | 77a808aa2602dea022cd2f5db00275d4 |
| Size: | 1 MB |
| First Published: | 2026-05-20 17:00:29 (a week ago) |
| Latest Published: | 2026-05-20 17:00:29 (a week ago) |
| Status: | Trojan.Heur! (on last analysis) | |
| Analysis Date: | 2026-05-20 17:00:29 (a week ago) |
Detection screenshot
The screenshot is a visual record of a GridinSoft Anti-Malware detection for this sample. Use the hash and metadata above as the primary identifiers when comparing the file on your system.
Common Places:
| %sysdrive%\portablesoft\calibre portable\calibre\app |
ThreatInfo has observed cjpeg-calibre.exe in the locations listed above. Files found in temporary folders, user profile folders, startup locations, or unusual application directories should be reviewed more carefully than files installed under a known program directory.
Geographic signal
Observed country distribution
ThreatInfo has seen cjpeg-calibre.exe across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.
The strongest geographic signal for this file is Poland with 100.0% of observed hits. Geographic distribution can help identify targeted campaigns, regional software bundles, or where a file is most commonly reported.
OS Version:
The most common operating system signal for cjpeg-calibre.exe is Windows 10 with 100.0% of observed hits. If your system differs from the common profile, check whether the file was introduced by a specific installer, archive, or removable device.
Analysis
cjpeg-calibre.exe is identified as pe for 64-bit systems. The subsystem is Windows CUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.
PE Sections:
Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.
7c79d57f23e7b61f62903065488c8d22
4f03abb56b490d03e440c48c7e747ac4
6ce8fb223dd73351ef4c23b0c6ab07ff
17881800342499c14c65e15abc43d7d0
bf619eac0cdf3f68d496ea9344137e8b
e004de00c8e4161f9a8b96a63f27f057
06227192ca5da160dc078cc29cc69d5f
PE section names and hashes can reveal packing, injected resources, or unusual build artifacts. Sections with uncommon names, very large raw data, or hashes that differ from a trusted copy deserve additional review.
Report conclusion
GridinSoft detects this file as Trojan.Heur!
This report identifies cjpeg-calibre.exe by MD5 77a808aa2602dea022cd2f5db00275d4. It is part of the Trojan report group. If the same file is present on your device, scan the system and remove the detected object after confirming the hash and location.