PDF malware analysis — malicious · bcc9b74489f1a5f3

MALICIOUS

PDF

14.2 KB Created: 2008-12-15 09:50:30

MD5: 2b8effbaba2f40cc0e7c859ae9db15e8 SHA-1: b105fd22ab23b258c20b6f15106f03946e697903 SHA-256: bcc9b74489f1a5f363447560c4045848cad8dccf9acb08ccabb31ed38ba992da

120 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript triggered by an OpenAction, indicating an attempt to exploit vulnerabilities. Specifically, the 'util.printf' function firing points to CVE-2008-2992, a known vulnerability in Adobe Reader. The embedded JavaScript is likely intended to download and execute a second-stage payload.

Heuristics 5

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)
OpenAction trigger high PDF_OPENACTION

PDF has an /OpenAction — code runs automatically when opened
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` `e38aa80f836ff1669a9e5149cbc8ddb50a2b9d266ca3729a636fe830dca4f151`	pdf-javascript-stream	PDF /JS object 6 at offset 0x179	13601 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 long base64-like blob(s).

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