PDF malware analysis — malicious · e8bb6c1aac775b92

MALICIOUS

PDF

6.1 KB

MD5: 95d0035b585fd19985c0f2452b858637 SHA-1: c70e8cab883bfdbb96eee0e79af0e682d0be51ca SHA-256: e8bb6c1aac775b9233f6c1ca64b9ae61ea0db8b44feb8ca5c881a609453c81ed

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The presence of a critical CVE_2008_2992 firing related to util.printf suggests exploitation of this vulnerability. The embedded JavaScript stream, identified as javascript_obj0006_000.js, is likely responsible for executing the malicious payload. The ClamAV detection further supports 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` `b6301c1fcc00fb6199af4a698c388aedf65e05241f972689924011309e9ec3d9`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A3	5289 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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