Malicious PDF — malware analysis report

Static analysis result for SHA-256 be8448ce37d0c4dd…

MALICIOUS

PDF

1.5 KB
MD5: 593e65e8f06e24568a3b6b06eada17bb SHA-1: 9bcfcf09f29a9771d46be39b1cd8beda31cc1570 SHA-256: be8448ce37d0c4ddaa8331d1c97ee34e8f4504243f364808309a68bf01b0ca81
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that is obfuscated and utilizes the unescape function. A critical heuristic firing indicates exploitation of CVE-2009-4324 via the media.newPlayer object, which is known to execute JavaScript. This suggests the file is designed to deliver a payload by exploiting this vulnerability.

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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj111711_000.js
80d0531cfcfd5f75493ff3aeefeb43b6a7281077b49972807cd2675ac97439ae
pdf-javascript-stream PDF /JS object 111711 at offset 0x197 294 bytes
javascript_obj111712_001.js
65cb939a72eb4c3ec9ba9ea62c42328be56bff2841318ec56fe4e920c807a2ab
pdf-javascript-stream PDF /JS object 111712 at offset 0x2B3 1978 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
javascript_obj111713_002.js
27f3b109bc63c59e2a8399ab722d92c7b35227805ca771c1aa8cfa43e62747e6
pdf-javascript-stream PDF /JS object 111713 at offset 0x54D 79 bytes