PDF malware analysis — malicious · c801d11cd8aa6958

MALICIOUS

PDF

6.2 KB

MD5: f179a7bcc7374f67e61003bfdf244a4f SHA-1: ccf20db9a4cc72b6c9ec8912c772672c39e49ea1 SHA-256: c801d11cd8aa6958fdbdf3beeb50c548cfe33a64187a49b89fa3584656d359ed

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical finding of CVE_2008_2992 suggests the exploitation of a known PDF vulnerability. The presence of unescape() further points to obfuscation techniques commonly used to hide malicious code. The primary intent appears to be the execution of this JavaScript, which likely leads to the download and execution of a secondary payload, as suggested by the ClamAV detection and the suspicious extracted artifact.

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` `576f9534b2c6ec200154f0350c82dfba0c7c18dc59690f3b615d8a5ca7bb64b1`	pdf-javascript-stream	PDF /JS object 6 at offset 0x193	5177 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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