Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0196a239749d0dd…

MALICIOUS

PDF

6.6 KB
MD5: a54eb03b673dde511cc629f4d168ad2f SHA-1: 10ca3f8dd89b778b9768410421d47f86a9a8251c SHA-256: c0196a239749d0dd211bb0e9c27d8bab7222fe03b98e5211e7a2c3e92855e769
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that is triggered by the CVE-2008-2992 vulnerability, indicated by the 'util.printf' heuristic. This JavaScript is likely used to download and execute a second-stage payload. The presence of JavaScript actions and unescape calls further supports this. The benign URLs extracted are not relevant to the malicious functionality.

Heuristics 6

  • util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992
    PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (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_off00000325.bin
8f35435fc189a3b789b09409cc9ce26804f2da10af902c17299425ecdabc3feb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x325 1201 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).
stream_003_off00000664.bin
ec143d2c788772e96b97158d6e9e0e81ce85c63e66a3a65b5ca49e3bc006b436		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x664 407 bytes

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