PDF malware analysis — malicious · ad461e18ffc9c411

MALICIOUS

PDF

7.0 KB

MD5: 2bd0361c2f7112a91e512ad743dd0221 SHA-1: 9e6725dd489b4ac0c6e7b2d9e54c94e236f63b5d SHA-256: ad461e18ffc9c41133a0a24a119a72dacdcca46b5d4948959be0ad1a27e62ac1

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of the CVE-2008-2992 heuristic, specifically mentioning util.printf, strongly suggests exploitation of this known PDF vulnerability. The embedded JavaScript stream, identified as javascript_obj0006_000.js, is likely responsible for executing the malicious payload. The ClamAV detection further confirms the malicious nature of the file.

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` `c5f9f1ecd70c42acccfd7aee8936f1c3301b8c1f5a45e3fef41107f784bfb5f0`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A3	6126 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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