PDF malware analysis — malicious · b147937876a6f229

MALICIOUS

PDF

6.8 KB

MD5: f06f81bb563c7102f67cc3a45894d4be SHA-1: 2d339e6b0fa6f210909c8d33cf14f0dc29a6e694 SHA-256: b147937876a6f229e9d7bc6dfa063347bfae659aa54c5df6632d6e7f559f2947

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript and triggers a critical alert for CVE-2008-2992, indicating exploitation of a known vulnerability. The presence of unescape() calls and obfuscated JavaScript further suggests malicious intent. The primary goal appears to be the execution of arbitrary code via the embedded script, likely to download and execute a second-stage payload.

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` `05e01abb40a4c04c2f0f8d687d0bac1f092c48c9a352e6265395aa8b74070dd8`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A5	5746 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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