Pdf.Dropper.Agent — PDF malware analysis

Static analysis result for SHA-256 2f244622e3062870…

MALICIOUS

PDF

1.4 KB
MD5: 1aa97fb6267979b36af255e9307cf73a SHA-1: c1d4958e5d710721987e80eb72fc20030d062be9 SHA-256: 2f244622e306287010a725488ea51e136748e5986d21a445ec83c17e599859dd
178 Risk Score

Malware Insights

Pdf.Dropper.Agent · confidence 90%

MITRE ATT&CK
T1059.001 JavaScript T1204.002 Malicious JavaScript

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 exploitation. The presence of two embedded JavaScript files, one of which is large and obfuscated, points to the execution of malicious code. ClamAV detection as Pdf.Dropper.Agent further supports this, indicating the file's purpose is to drop and execute additional malware.

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-7245041-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7245041-0
  • 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
78fda1426dc469fb430cd5847c7addefad2f97d29e59b1720180e7397fabe61b		 pdf-javascript-stream PDF /JS object 111111 at offset 0x160 1240 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
f2d460dbe3bd973955fc5f713dad53b8bf3999c8c2bd0cadb68337c9259afae4		 pdf-javascript-stream PDF /JS object 111112 at offset 0x483 249 bytes

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