PDF malware analysis — malicious · 8526859776f66e8b

MALICIOUS

PDF

5.8 KB

MD5: 12ebaca3d478367afdbec29e1f745e04 SHA-1: d2d001cf111b1c0816c379dabfe1ea82fd1a34c8 SHA-256: 8526859776f66e8bfabf0afffd0a37a59b73bc4a48e5bf661c8417d8f1e69714

178 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. The critical CVE_2008_2992 heuristic firing suggests the exploitation of a vulnerability related to util.printf, likely to achieve arbitrary code execution. The presence of obfuscated JavaScript and a ClamAV detection for Heuristics.PDF.ObfuscatedNameObject further supports the malicious nature of the file. The primary attack vector appears to be leveraging this vulnerability to run malicious code.

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` `2bffc88ef6c69908b01075d6e4602448f0a671ac111ef552fb41efe830513393`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A5	4947 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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