Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a1469f490d7ed8…

MALICIOUS

PDF

9.7 KB Created: 2010-02-19 03:08:06 Authoring application: xnObDRxyfFHkodVXvoNyJ (via MCGSSxRNBnXIEXx)
MD5: 48b3716e30078dcfa82ca45dfeff807a SHA-1: 7ef809f8deb9933fd957b38a61651512c0d488ab SHA-256: 89a1469f490d7ed8433dcc895b19945d3a62c76b321d1f9dc35dbecabc60edaf
78 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV with the signature Pdf.Exploit.Agent-35572. Static analysis revealed embedded JavaScript, indicating an attempt to exploit a vulnerability within the PDF reader. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, although its specific actions are obfuscated. The document body text is generic and does not provide further clues about the lure.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-35572 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35572
  • 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.
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
7c07ca1bbd05abd0f58681a9e0adb4ba07934649d43f3ce066b4b0d3d26441b6
pdf-javascript-stream PDF /JS object 7 at offset 0x2AE 8491 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).