Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c0a97882d0faa4…

MALICIOUS

PDF

1.3 KB
MD5: 44e7591959354a85174f12846fb14e40 SHA-1: f65b7c7a9085668b4c736c13b20de6186ff1dd9e SHA-256: c9c0a97882d0faa4b98dec8593946cf1ef237086e1104a745b262ccb260e99f1
118 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2009_4324 heuristic specifically points to the use of media.newPlayer, a known exploit vector. The embedded JavaScript uses unescape() for obfuscation, a common technique to hide malicious code. The script likely downloads and executes a second-stage payload, contributing to the overall malicious nature of the document.

Heuristics 5

  • media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324
    PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009.
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits
  • 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_obj0006_000.js
479e7e84743c3490c9a8dc448e0e8788fe67149154989a8404afd728cdd4b968
pdf-javascript-stream PDF /JS object 6 at offset 0x167 729 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s).