PDF malware analysis — malicious · e3ad0d5aab322bd2

MALICIOUS

PDF

6.0 KB

MD5: b8b93490847c7d994f3a67483cc1683b SHA-1: edfbd5fb98af4dcc21629f029d0a835c2f3729a7 SHA-256: e3ad0d5aab322bd21be6da6c4b8076ffbeb7a36721efb9f97929c5c98932fa6b

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_UNESCAPE. A critical finding is the CVE-2008-2992 exploit (util.printf), suggesting the JavaScript is designed to leverage this vulnerability. The embedded JavaScript file 'javascript_obj0006_000.js' is the primary artifact. The overall intent appears to be the execution of malicious code via a PDF vulnerability, likely leading to further compromise.

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` `a64718abc183c95e7e71bd8134e37d0e1e1d663fdf610405ae2b457bb3452fdf`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19D	4973 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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