Malicious PDF — malware analysis report

Static analysis result for SHA-256 abbe756811e46074…

MALICIOUS

PDF

32.6 KB
MD5: 04274f0bdeaa254806bbe822429c3b7e SHA-1: 82ad96a4da9b7c13b824cb563a223040948b9be0 SHA-256: abbe756811e46074223d3a1599ca8e8d702080e8720ab2e263d40d05a3798d5e
216 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript and a Flash object, as indicated by the PDF_JAVASCRIPT, PDF_JS, PDF_RICHMEDIA, and EXTRACTED_FILE_CLAMAV heuristics. ClamAV detected the file as 'Pdf.Exploit.Agent-35955', suggesting it exploits a known PDF vulnerability. The embedded JavaScript and Flash file are the likely vectors for delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 7

  • ClamAV: Pdf.Exploit.Agent-35955 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35955
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • RichMedia (Flash) high PDF_RICHMEDIA
    PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
MTGQTFlYVNRAr.swf
c2b666a3ef4c191b77b78c037656e50477b8ba3d35fd61ae843a3a1f4d41c5c1		 pdf-embedded-file PDF EmbeddedFile object 16 at offset 0x1858 26774 bytes
Detection
ClamAV: Pdf.Exploit.Agent-35955
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.
javascript_obj0006_000.js
4117c0a6ecf3d9d554f7eeb9d5e06268edd54642572c8d27f2cc3da74f028ced		 pdf-javascript-stream PDF /JS object 6 at offset 0x144 4432 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.