Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ca7add41ab17bf…

MALICIOUS

PDF

1.4 KB
MD5: 9c2036de425980b016ba83ed9e5e806e SHA-1: 948517e5ef3752ac3e3f7b80f9a54630c06d351c SHA-256: f9ca7add41ab17bfe3a9e59ae0cbf7b7b78ea1cc6b57da0dfc9d3d9b7084d463
178 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

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 of this flaw to trigger the JavaScript. The ClamAV detection 'Pdf.Dropper.Agent-7326568-0' further confirms its malicious nature. The embedded JavaScript streams are likely responsible for downloading and executing a second-stage payload, a common dropper behavior.

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-7326568-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7326568-0
  • 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
b4cb5ad07a25101b00e3fc1b01b3b47d591e0b539253bcf3f033141553b33963		 pdf-javascript-stream PDF /JS object 111111 at offset 0x160 1264 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
bcef86d0f24faf8d71220a6856d37f9cd126fefced2d0fb912e82e7bd31f1c0a		 pdf-javascript-stream PDF /JS object 111112 at offset 0x481 260 bytes

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