GridinSoft Threat Intelligence

LDFFileExtProt.dll file report

Clean record File reputation report
MD5 4a6d404b8579c4593539c41b8f785500
Latest seen 2026-05-14 02:00:59 (2 weeks ago)
First seen 2026-05-14 02:00:59 (2 weeks ago)
Size 3 MB
Publisher Lenovo Corporation
Product 联想电脑管家
Signed by Lenovo (Beijing) Limited

Why it matters

Evidence available for this file

Detection

Latest status is clean for this hash.

Timeline

First seen 2026-05-14 02:00:59 (2 weeks ago); latest analysis 2026-05-14 02:00:59 (2 weeks ago).

Publisher context

Company metadata: Lenovo Corporation. Product metadata: 联想电脑管家.

Digital signature

Signed by Lenovo (Beijing) Limited. ThreatInfo marks this publisher as trusted for this record.

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. Confirm the hash and publisher match the expected software.
  2. Review the observed locations and signature information below.
  3. Rescan if the file was downloaded from an unknown source or appears in an unusual path.

File context

LDFFileExtProt.dll is a Windows file recorded in the ThreatInfo database. It is associated with 联想电脑管家. The reported company name is Lenovo Corporation. The current detection status is Clean, based on the latest analysis from 2026-05-14 02:00:59 (2 weeks ago).

This record is currently marked as clean, but file reputation can depend on the exact path, hash, and source. Compare the MD5 and publisher data below with the file on your system.

File Details

Product Name: 联想电脑管家
Company Name: Lenovo Corporation
MD5: 4a6d404b8579c4593539c41b8f785500
Size: 3 MB
First Published: 2026-05-14 02:00:59 (2 weeks ago)
Latest Published: 2026-05-14 02:00:59 (2 weeks ago)
Status: Clean (on last analysis)
Analysis Date: 2026-05-14 02:00:59 (2 weeks ago)

Overview

Signed By: Lenovo (Beijing) Limited
Status: Trusted Publisher

ThreatInfo marks this publisher as trusted for this record, but the file hash and source should still match the expected software distribution.

Common Places:

%programfiles%\lenovo\pcmanager\5.1.120.7041\modules

ThreatInfo has observed LDFFileExtProt.dll 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 LDFFileExtProt.dll across 1 countries. Use this signal to compare local evidence with where the sample is most often reported.

Top country China
Share 100.0%
Low High activity

The strongest geographic signal for this file is China 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 LDFFileExtProt.dll 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

LDFFileExtProt.dll is identified as pe for 32-bit systems. The subsystem is Windows GUI. PE header values are useful for triage, especially when they do not match the expected publisher, product, or release timeline.

Format pe
Architecture 32-bit
Subsystem Windows GUI
Entry point 0x00316f46
Image base 0x10000000

PE Sections:

Sections 8
Raw data 3595776

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

.text 0 bytes · 0.0% of section data
MD5 d41d8cd98f00b204e9800998ecf8427e
.rdata 68608 bytes · 1.9% of section data
MD5 79f3c42aaffd8b60ecbdd5980ac517e7
.data 0 bytes · 0.0% of section data
MD5 d41d8cd98f00b204e9800998ecf8427e
.fptable 0 bytes · 0.0% of section data
Uncommon name
MD5 d41d8cd98f00b204e9800998ecf8427e
.vmp0 0 bytes · 0.0% of section data
Uncommon name
MD5 d41d8cd98f00b204e9800998ecf8427e
.vmp1 3518976 bytes · 97.9% of section data
Uncommon name
MD5 6b05543838cd3e8536621a31852cf293
.reloc 6656 bytes · 0.2% of section data
MD5 ebd95b36183d504385621a5f9733ab8b
.rsrc 1536 bytes · 0.0% of section data
MD5 78f4468e35ff8e0ae67ce4ab35565b2d

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

This hash is currently recorded as clean

Use the MD5, publisher, signature, and observed paths in this report to verify that the file on your device is the same copy described here.

Scan with GridinSoft Anti-Malware Use a local scan if the file origin or behavior is unclear. Check this hash on VirusTotal

Recommended next steps

  • Compare the local file MD5 with 4a6d404b8579c4593539c41b8f785500.
  • Check the file path, publisher, and signature against the details in this report.
  • Run a GridinSoft scan if the source, path, or behavior looks unusual.