Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffa3fc971bf834e4…

MALICIOUS

PDF

1.4 KB
MD5: eba4fabe75d6555c832218a5224fd2af SHA-1: 0f222e412e2170b9e847fde75a7b425962261b8c SHA-256: ffa3fc971bf834e4c4d8f03b029fe0462e66363127249b7b4771f6ccf9f5eb46
118 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Execution: Malicious File

The PDF file contains embedded JavaScript, which is triggered by a JavaScript action. The critical heuristic firing indicates exploitation of CVE-2009-4324 via the media.newPlayer object. This suggests the document is designed to exploit this vulnerability to execute arbitrary code, likely to download and run a second-stage payload.

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. (matched in decompressed stream)
  • 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
e11e4f65eb308c952f8877d1a75c0df5d54500417c798ed483c98d2fd8bf9037
pdf-javascript-stream PDF /JS object 111111 at offset 0x160 1263 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
0d8e12c0641740357e1ca6023f68642dd844dd2acb1a3fb235a1af43770ebaa2
pdf-javascript-stream PDF /JS object 111112 at offset 0x486 259 bytes