Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e906dd36ea0b506…

MALICIOUS

PDF

7.0 KB
MD5: f0703d5e6317b37ceebcd980fe528b0e SHA-1: d7b6444264903afdd63c927d1a0d06580471fa4b SHA-256: 8e906dd36ea0b5068c1bc80500ec642bbd88313bdbee3737485fc898066d631a
118 Risk Score

Malware Insights

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

The PDF file exploits CVE-2009-4324 using embedded JavaScript. The JavaScript stream contains an unescape() call and utilizes the media.newPlayer object, indicating exploitation of this specific vulnerability. The primary goal appears to be arbitrary code execution, likely to download and run a second-stage 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)
  • 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_off00000326.bin
60fd7acdcc5f94485e5e3c820dc0ccab6c67effcd8068edd1b2ed2168b6977d2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x326 2185 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).
objstm_0024_00.bin
d5576d5c4f6c90ae9674d1e58c3662b54b6db7874405cdef5205e5c41e066631		 pdf-objstm-decoded PDF /ObjStm 24 0 obj (inflated) 331 bytes

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