Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9ac269dd25e91a…

MALICIOUS

PDF

6.6 KB
MD5: 50fe9d1281179cd99a9f09ebe52bc7cc SHA-1: 500f3d121021d48e23e1b2a43b27897e3e77c3ee SHA-256: ed9ac269dd25e91ab28bf421fe665cb662ee0945efff9db8b1a97382e061f110
178 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a CVE-2008-2992 exploit (util.printf) and ClamAV detection as Pdf.Exploit.Agent-19096 strongly suggests malicious intent. The unescape() call further points to obfuscated JavaScript execution, likely to download and run a secondary payload.

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)
  • ClamAV: Pdf.Exploit.Agent-19096 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-19096
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0006_000.js
5e1e1a046c2ab8850c9a533174bbb531a0b700206398b8896b36d0f97eefae54		 pdf-javascript-stream PDF /JS object 6 at offset 0x1A7 5624 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).

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