PDF malware analysis — malicious · ea2caa2159747510

MALICIOUS

PDF

6.3 KB

MD5: ec35bd0463d00a707df2797436545ab9 SHA-1: 009fb1b0b921c06b01d2d251cb24183d823a5f42 SHA-256: ea2caa21597475100a403ad91115c208b93e42ca338466e89351f230ffbf76e6

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape() function and a printf() call, indicating exploitation of the CVE-2008-2992 vulnerability. This technique is commonly used to download and execute further malicious content. The ClamAV heuristic also flags the file as suspicious due to obfuscated objects.

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` `a596b16fc3622bd70b81b792417ddc86a4b3860550d6cb3910b82215e2ede09f`	pdf-javascript-stream	PDF /JS object 6 at offset 0x199	5261 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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