Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bd7ebf929f6608a…

MALICIOUS

PDF

2.7 KB Created: 7135-01-01 Authoring application: 1174
MD5: 5cfecf3d4ce89ea0ff6cd48d2203b2a7 SHA-1: 4742f6581c1bc18deb44b33fbf6604b75157db2c SHA-256: 9bd7ebf929f6608a007fa8fa35e380378b0114a4bc4973f423571a0fbf4e55d1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The critical ClamAV heuristic indicates this PDF is malicious, specifically identified as 'Pdf.Exploit.Agent-36014'. Low-severity heuristics also point to embedded JavaScript, which is further supported by the extraction of a JavaScript file. The presence of JavaScript actions and streams within the PDF suggests an attempt to exploit vulnerabilities and execute malicious code, likely to download and run a secondary payload.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
  • Suspicious extracted artifact medium 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.
  • 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_obj0013_001.js
76d37ddc6462f6f81599c3eb55bb7bd877e737b8e428ee64d1df27301743ee22
pdf-javascript-stream PDF /JS object 13 at offset 0x328 5131 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).