PDF malware analysis — malicious · ce3f7e2cd41a457e

MALICIOUS

PDF

6.2 KB

MD5: 245202d67e65ea6d213e081690bad158 SHA-1: 516752bb4b355a070d4fc29d655c3805087783a7 SHA-256: ce3f7e2cd41a457e018c047ac85566f887b6c89ecb5675e0b4e2caa680d19a8c

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the `unescape()` function and a `util.printf()` call, indicating exploitation of CVE-2008-2992. This technique is commonly used to obfuscate malicious code and download secondary payloads. The presence of these indicators and ClamAV's detection strongly suggest malicious intent.

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.

Filename	Kind	Source	Size
`javascript_obj0006_000.js` `9f9d11c877b41311a8229b66a5e66e2ad318179dbb462c56cd5bd29cb709a33b`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19D	5114 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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