PDF malware analysis — malicious · b4ad182fa7057b51

MALICIOUS

PDF

5.9 KB

MD5: a05958aa0ca20b902efe1d9a89c5dca3 SHA-1: fddc63cc63a17d52e02a5b05c80a9ff66f0ab4b8 SHA-256: b4ad182fa7057b510a43bf8f3bc3449bfe69e2b0019475224b433bf7cc1ba739

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, which is a common technique for exploiting vulnerabilities in PDF readers. The heuristic 'CVE_2008_2992: util.printf' specifically indicates the use of a known exploit (CVE-2008-2992). The embedded JavaScript stream, identified as 'javascript_obj0006_000.js', is likely responsible for executing the malicious payload. The ClamAV detection 'Heuristics.PDF.ObfuscatedNameObject' further supports the malicious nature of the file due to obfuscation techniques.

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` `f578f0c0d5c667504e612f50ed048fbeb26fc189d5fe3463e3b886451fe958e8`	pdf-javascript-stream	PDF /JS object 6 at offset 0x18F	5121 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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