PDF malware analysis — malicious · e09134394c0b8635

MALICIOUS

PDF

7.1 KB

MD5: b6b04715f3e8266c49d84ef17eec4570 SHA-1: 3e1c318f57d55d966898bfceb41f81cbd70cdd3e SHA-256: e09134394c0b8635b8ed17edf7b872dcc7e81d5d3f10f854a9063b388fb31ecc

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell 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 suggests exploitation of a known vulnerability in PDF readers. The unescape() call and obfuscated nature of the JavaScript further point to malicious intent, likely to download and execute a secondary payload. The ClamAV detection confirms 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` `6e22d2726d693226451f4d0944dd0173408204488f6f1d08aac609c647aeb591`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19B	5927 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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