Malicious PDF — malware analysis report

Static analysis result for SHA-256 d27a0108c58d6ec6…

MALICIOUS

PDF

5.9 KB
MD5: 1e9b45d846a3bb89d17f0bf99f1db0de SHA-1: 31b9ed2645273d81273600aa2cdc32525783acb9 SHA-256: d27a0108c58d6ec618be8c784a22523031df2b5a06390c87fc0394ad0ce38e0d
178 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 JavaScript T1204.002 Malicious Link

The PDF file contains embedded JavaScript and triggers a critical vulnerability (CVE-2008-2992) related to util.printf. This indicates the document is designed to exploit this flaw to execute arbitrary code. The presence of obfuscated JavaScript and a ClamAV detection for 'Heuristics.PDF.ObfuscatedNameObject' further supports a malicious intent, likely to download and execute a second-stage 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: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • 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
23601b882b474ecdc959977f28a1f37cfdc6fead7a16db9d34a7516ef5aa26a5		 pdf-javascript-stream PDF /JS object 6 at offset 0x19F 4875 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 3 eval/decoder/string-building token(s).

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