Malicious PDF — malware analysis report

Static analysis result for SHA-256 974c38f883383400…

MALICIOUS

PDF

1.4 KB
MD5: a1b5dd8fa13e35a1dce09b843ef205db SHA-1: 279b1ef9b3f339d61b34d47ae6167b1220e1c550 SHA-256: 974c38f8833834006b997cbc2ed2117a8776f4351e799724810d3458d3f3eac3
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 JavaScript/JScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic identified the CVE-2009-4324 vulnerability related to media.newPlayer, suggesting the JavaScript is designed to exploit this flaw. The presence of two embedded JavaScript files and the ClamAV detection as 'Pdf.Dropper.Agent-7284798-0' strongly suggest this is a dropper. The JavaScript likely downloads and executes a second-stage payload.

Heuristics 6

  • 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. (matched in decompressed stream)
  • ClamAV: Pdf.Dropper.Agent-7284798-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7284798-0
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj111111_000.js
9834e4cdbaa9062cf3bdb4d1a3cf6638ac1eb38de42e852081bf661a38a06225		 pdf-javascript-stream PDF /JS object 111111 at offset 0x160 1259 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
javascript_obj111112_001.js
3e31f03d73088b8932c7f75bd17900dbb5ee4fe954139bc46b482b09e60e52e9		 pdf-javascript-stream PDF /JS object 111112 at offset 0x484 262 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.