GridinSoft Threat Intelligence

jpegtran-calibre.exe threat report

Detected as Trojan.Heur! File reputation report
MD5 511988fd59112f0df16ea579384c97e5
Latest seen 2026-05-20 17:00:29 (a week ago)
First seen 2026-05-20 17:00:29 (a week ago)
Size 1 MB

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
511988fd59112f0df16ea579384c97e5
Download Anti-Malware

Why it matters

Why GridinSoft flags this file

Detection

GridinSoft identifies the sample as Trojan.Heur!, part of the Trojan threat category.

Category context

Malware disguised as legitimate software or delivered through deceptive packaging. Related Trojan reports help compare this file with nearby detections, publishers, and hashes.

Timeline

First seen 2026-05-20 17:00:29 (a week ago); latest analysis 2026-05-20 17:00:29 (a week ago).

Observed locations

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

  1. Compare the MD5 above with the file found on the device.
  2. Check whether the file appears in the observed locations or under one of the alternate names.
  3. 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

jpegtran-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 jpegtran-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: 511988fd59112f0df16ea579384c97e5
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

jpegtran-calibre.exe 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 jpegtran-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 jpegtran-calibre.exe across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country Poland
Share 100.0%
Low High activity

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:

Windows 10 100.0%

The most common operating system signal for jpegtran-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

jpegtran-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.

Format pe
Architecture 64-bit
Subsystem Windows CUI
Entry point 0x0003f120
Image base 0x0000000140000000

PE Sections:

Sections 7
Raw data 1288192

Section layout highlights raw-size concentration, repeated names, packer markers, and hashes that can be compared across related samples.

.text 378368 bytes · 29.4% of section data
MD5 d7615f72d15a31c8de61e0444c8d9c39
.rdata 312832 bytes · 24.3% of section data
MD5 eddba50a42303064be168080ac3c0c76
.data 3072 bytes · 0.2% of section data
MD5 6274a524c345d8a52716e351fc6ad906
.pdata 11264 bytes · 0.9% of section data
MD5 8b15c64c39031a12b905145dc9881b24
.fptable 512 bytes · 0.0% of section data
Uncommon name
MD5 bf619eac0cdf3f68d496ea9344137e8b
.rsrc 512 bytes · 0.0% of section data
MD5 f5f03939b53f32af6275ccda58beeb18
.reloc 581632 bytes · 45.2% of section data
MD5 b23d4ec1b90347cc63ed3eac61a2e571

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 jpegtran-calibre.exe by MD5 511988fd59112f0df16ea579384c97e5. 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.

Download GridinSoft Anti-Malware Scan the device and confirm whether this exact hash is present. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with 511988fd59112f0df16ea579384c97e5.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan and remove the object if the same hash is found. Use the Trojan category to compare similar reports.