GridinSoft Threat Intelligence

ezPDFBookLib.dll file report

Under review File reputation report
MD5 effb47c993d20bc3bb88957a81bbf67a
Latest seen 2025-06-16 23:01:19 (a year ago)
First seen 2025-06-12 23:00:56 (a year ago)
Size 10 MB
Publisher Unidocs, Inc.
Product ezPDF Book Library

Why it matters

Evidence available for this file

Detection

No final classification is available yet.

Timeline

First seen 2025-06-12 23:00:56 (a year ago); latest analysis 2025-06-16 23:01:19 (a year ago).

Publisher context

Company metadata: Unidocs, Inc.. Product metadata: ezPDF Book Library.

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. Use the hash and metadata below to verify the exact file identity.
  2. Review publisher, signature, paths, and PE details for inconsistencies.
  3. Run a local scan if the file appears unexpectedly or starts with Windows.

File context

ezPDFBookLib.dll is a Windows file recorded in the ThreatInfo database. It is associated with ezPDF Book Library. The reported company name is Unidocs, Inc.. The current detection status is Undefined, based on the latest analysis from 2025-06-16 23:01:19 (a year ago).

ThreatInfo does not have a final classification for this file yet. Use the technical details below to compare the hash, size, signature, and observed locations with the copy found on your device.

File Details

Product Name: ezPDF Book Library
Company Name: Unidocs, Inc.
MD5: effb47c993d20bc3bb88957a81bbf67a
Size: 10 MB
First Published: 2025-06-12 23:00:56 (a year ago)
Latest Published: 2025-06-16 23:01:19 (a year ago)
Status: Undefined (on last analysis)
Analysis Date: 2025-06-16 23:01:19 (a year ago)

Common Places:

%programfiles%

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

Top country South Korea
Share 100.0%
Low High activity

The strongest geographic signal for this file is South Korea 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 ezPDFBookLib.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

ezPDFBookLib.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 0x0044b893
Image base 0x10000000

PE Sections:

Sections 5
Raw data 10874880

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

.text 6102016 bytes · 56.1% of section data
Large raw data
MD5 68261fcd813db80bd86edb839a97c976
.rdata 1261056 bytes · 11.6% of section data
MD5 854df01ef61e1ac1d019d08f2b340c4d
.data 214016 bytes · 2.0% of section data
MD5 4443b55db5a558105d5cc55172d79e18
.rsrc 2948608 bytes · 27.1% of section data
MD5 4ab2849cecb52a735e43fa4d7d9d0cd9
.reloc 349184 bytes · 3.2% of section data
MD5 588e50aac11d23d9e1762f2a125a5774

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 file is still under review

ThreatInfo has not assigned a final verdict yet. Compare the file hash, location, signature, and publisher before trusting the file on a production system.

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 effb47c993d20bc3bb88957a81bbf67a.
  • 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.