PDF malware analysis — malicious · d213a471bd5a4613

MALICIOUS

PDF

7.0 KB

MD5: 57860963c68a278d5cc132e04bcae461 SHA-1: 2f95c3d56c66be20d4aa38e8e44dfb0bf6b9e7c0 SHA-256: d213a471bd5a4613c379d8a9aa02b5668e1a687fa4e862ea93e4f11ce9d3bea1

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains embedded JavaScript and triggers a critical vulnerability (CVE-2008-2992) related to util.printf. This indicates the file is designed to exploit this known PDF vulnerability to execute arbitrary code. The embedded JavaScript stream, further obfuscated, likely facilitates the download or execution of a secondary payload. The ClamAV detection reinforces the malicious nature of the 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` `64e85727ad7a5b1ffac8c31b3fcf22603dd4350b7708ff9bb56df66d12b49ec7`	pdf-javascript-stream	PDF /JS object 6 at offset 0x199	5766 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).

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