PDF malware analysis — malicious · 79f3e77be21c692e

MALICIOUS

PDF

7.2 KB

MD5: 406e0058ccaed965297804e8e1f84891 SHA-1: 92b12c6b3c30de5240a920ac89f50299f2f7d071 SHA-256: 79f3e77be21c692e5de702193c9f2d1d02f5febc0882e89ce37b4e6b1e88d580

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2008-2992, indicating exploitation of a PDF vulnerability. The presence of JavaScript and the specific CVE exploit suggest the document's primary purpose is to execute arbitrary code. The unescape() call and obfuscated JavaScript further support this, pointing towards a downloader or exploit delivery mechanism.

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` `384ba7fb68d8f414fa6beabab2a3b7d38254b258ccddaab39df1017c541d7b00`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1AD	6016 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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