Pdf.Dropper.Agent-7217795-0 — PDF malware analysis

Static analysis result for SHA-256 c395910fa7487cac…

MALICIOUS

PDF

1.4 KB
MD5: 548c36e92bc79291d462403329d36115 SHA-1: 128fe3cdf96c7fa8b22d07f16c44376f0c7a4fa7 SHA-256: c395910fa7487cac35d3e23ae7c91dc55c9a92ff668be1fcb111482c578db67e
196 Risk Score

Malware Insights

Pdf.Dropper.Agent-7217795-0 · confidence 95%

MITRE ATT&CK
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 suggests exploitation of a known vulnerability in Adobe Reader. The presence of two embedded JavaScript files, one of which is significantly larger, points towards a dropper functionality. The ClamAV detection of 'Pdf.Dropper.Agent-7217795-0' further supports this assessment. The JavaScript is likely responsible for downloading and executing a secondary 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-7217795-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7217795-0
  • unescape() call high PDF_UNESCAPE
    unescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
  • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj111111_000.js
d97d76b65ca50059daa6b2b0eb7a034fa0dbed988d949f52ac70a4324a79bee3		 pdf-javascript-stream PDF /JS object 111111 at offset 0x160 1268 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
ae4bdcd9d07d4cb3846d8869196c0f24d13efe6d4702b71048e89e273d547a51		 pdf-javascript-stream PDF /JS object 111112 at offset 0x483 261 bytes

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