Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1e1fae70dd0ed3…

MALICIOUS

PDF

12.3 KB
MD5: 8364e3457c2ecab87115eead6fb3aec4 SHA-1: 806077427eec1584c4c59df9e3bbc3b48a3920cc SHA-256: ec1e1fae70dd0ed33707e619f26883e042897bf37a95b8d890ba781c3ca8097b
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript actions and streams. ClamAV detections for 'Pdf.Exploit.Agent-36365' and 'Pdf.Exploit.Agent-36364' strongly suggest the file is a malicious PDF exploiting a known vulnerability. The embedded JavaScript is the likely mechanism for executing a secondary stage, such as downloading additional malware.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36365 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36365
  • 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.
  • 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0076_000.js
cb429bc5199734d4b63d6415aacfc673dc48a2480acf31d8580c00e64be45b38		 pdf-javascript-stream PDF /JS object 76 at offset 0x369 11545 bytes
Detection
ClamAV: Pdf.Exploit.Agent-36364
Obfuscation or payload: unlikely

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