PDF malware analysis — malicious · b6fe6db133d696c2

MALICIOUS

PDF

6.5 KB

MD5: e889c7223edcb43aadd60b57cb205cb3 SHA-1: df491ca18c01afe0222e6a37f08253eb689dc91d SHA-256: b6fe6db133d696c210daabe2807d8f398fe0414fb8dfaee28868cb41e7275f21

180 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript 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 heuristic, CVE_2008_2992, specifically points to the exploitation of a known vulnerability. The embedded JavaScript file, 'javascript_obj0006_000.js', is the primary artifact, and its presence strongly suggests the document is designed to execute malicious code, likely for downloading further stages of an attack.

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` `63afddb0c8a17a3fb35708b7a706e797173188f8e520b83b6482e2e796c836fc`	pdf-javascript-stream	PDF /JS object 6 at offset 0x187	5501 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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