PDF malware analysis — malicious · b8a9d37cdb18c490

MALICIOUS

PDF

5.9 KB

MD5: f82f344d1ede349aa28fd8ad9175397e SHA-1: 683b40473a7e8821aa6716011e78ec2352bfab61 SHA-256: b8a9d37cdb18c49009eec6721e54a2e4d6976293cc451517b94ec54f20ab8d1f

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that utilizes the unescape() function and triggers CVE-2008-2992. This indicates the document is designed to exploit a vulnerability in PDF viewers. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the ClamAV detection for obfuscated objects and the presence of a suspicious JavaScript 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` `826e1803b3ea4267b5b2a011e9d0f56efa0ed8fe1c88f3486c07dca8895d8c89`	pdf-javascript-stream	PDF /JS object 6 at offset 0x19D	5081 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.