PDF malware analysis — malicious · 2fb22b34f4f783d5

MALICIOUS

PDF

6.2 KB

MD5: ce669dfa95881a89234efe8c6140bc83 SHA-1: ae9bbb4d7bbb63ab519bd935f51cfa5d404514fa SHA-256: 2fb22b34f4f783d522ea3ca8aeeae62e5dd95d44b5438ba2f7dbf0be997b0977

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical finding is the CVE-2008-2992 exploit, which leverages a util.printf function within the JavaScript. This suggests the document is designed to exploit this known vulnerability to achieve arbitrary code execution. The ClamAV detection further supports its malicious nature. No document body text was available for analysis, but the script-based exploitation is clear.

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` `8b542ad9d34fdc9c39adb77a34c242454074b3ad0ba07f4fdb7d8d537b6a8083`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19D	5130 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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