PDF malware analysis — malicious · e3aba67a44418276

MALICIOUS

PDF

6.5 KB

MD5: d4eceee2befe3651cd0cb85708ff5f1c SHA-1: c228928533c20f59f2e024dd7933c58fbff98f36 SHA-256: e3aba67a444182764b0852e8c06dd7ffb988994e666b1da5fbbf69a3eca15828

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File T1055.001 Process Injection

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2008-2992, indicating exploitation of a known vulnerability. The presence of JavaScript and the 'unescape()' call suggest the script is obfuscated and likely designed to download and execute a second-stage payload. The ClamAV detection further confirms its malicious nature.

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` `95bfdf8358a6850d5a9473391c5fcb83b6819a4c80dd938830fd72c42d932ef3`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19B	5392 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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