Malicious PDF — malware analysis report

Static analysis result for SHA-256 21fce320bd204fd6…

MALICIOUS

PDF

7.0 KB
MD5: 01454c63b8ff95bd2b344253a8d6444d SHA-1: f49c48f63928c28829e0399208a74547fe5d26d4 SHA-256: 21fce320bd204fd66dbb88d99118771409a2217fe527e36685faf036585fa15e
118 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2009-4324, indicating exploitation of a media player vulnerability. The presence of JavaScript and the specific CVE exploit suggest the file is designed to download and execute a malicious payload. No document body text was available for further analysis.

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)
  • 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. (matched inside decoded stream)
  • 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. (matched inside decoded stream)
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00000327.bin
1f581373c4879f448ff3b8c32a0c94603a7a2944aa17a22b369f3511c3d00c68		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x327 2283 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
objstm_0024_00.bin
6950a91bf5d022443a4af0bf774783ac24a8b820a8bdaaf947bf27e47bfd95fa		 pdf-objstm-decoded PDF /ObjStm 24 0 obj (inflated) 331 bytes

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