PDF malware analysis — malicious · 7a185c1c65bf888e

MALICIOUS

PDF

4.1 KB

MD5: 996766153917a2c889073b8c07324cf3 SHA-1: 9702d13fdf825dae8bc51dd9ee0e582d94fa75ab SHA-256: 7a185c1c65bf888e8bf95cf3101449cd8ce70c42c2bd7df196df0096b6edf1ad

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains obfuscated JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_UNESCAPE. A critical finding is the CVE-2008-2992 exploit, which leverages a util.printf call within the embedded JavaScript. This suggests the primary goal is to exploit this vulnerability to execute arbitrary code, likely downloading and running a secondary payload. The ClamAV detection further supports its malicious nature.

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` `ade61a47c8723ea438f2e444aa2856298ba1077e316cea9f4ed18eaae4c85aca`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19B	2886 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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