PDF malware analysis — malicious · 3673eafebf432f79

MALICIOUS

PDF

6.6 KB

MD5: 266d92afabb714aefd462c70ae9f9de3 SHA-1: 3c8de5bceb5cc576f1c49014fd224a75d248eb52 SHA-256: 3673eafebf432f7916e082bae9f2158d202b4ac80b5684f03c1f96b2a0a2c29a

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The file is a PDF containing embedded JavaScript, which is a common delivery mechanism for exploits. The critical heuristic firing for CVE_2008_2992 indicates exploitation of a specific PDF vulnerability. The embedded JavaScript stream, identified as 'javascript_obj0006_000.js', likely contains obfuscated code designed to download and execute a secondary payload. The presence of unescape() and printf() calls further suggests malicious JavaScript execution.

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` `08167efc7ffecabe27be7f5160a774be5f6aef6a38d97544afecda3178634dfd`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19F	5507 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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