Malicious PDF — malware analysis report

Static analysis result for SHA-256 db93d35e1e0cd2b0…

MALICIOUS

PDF

12.4 KB
MD5: 6e4acbd76acff71815f78148e1119921 SHA-1: a0c4c3ff2260557cc8d07aa357241fe3c98e3952 SHA-256: db93d35e1e0cd2b006380e75052083cf9e645a94a7588bbc3e54c08486dd1526
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. ClamAV detections suggest it exploits a known vulnerability, likely to execute the embedded script. The script's purpose is to download and execute a second-stage payload, as suggested by the 'Pdf.Exploit.Agent-36722' and 'Pdf.Exploit.Pdfka-9' signatures.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36722 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36722
  • 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
ed0231c9d54291550db2b1c01ae92118622773f9b04745e07bd74d9a0446d053
pdf-javascript-stream PDF /JS object 76 at offset 0x369 11616 bytes
Detection
ClamAV: Pdf.Exploit.Pdfka-9
Obfuscation or payload: unlikely