PDF malware analysis — malicious · 25579dc94eafd17c

MALICIOUS

PDF

5.9 KB

MD5: 8a07233908d3f72b49d0858929386794 SHA-1: 598073f6998b21a4968152a9c8c1c5ec287982a8 SHA-256: 25579dc94eafd17c002d463d69b9d5b971c918e9d2395d5eb01ba2772cbb5159

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic identified the CVE-2008-2992 exploit, which leverages util.printf to execute code. The presence of obfuscated JavaScript and a ClamAV detection for Heuristics.PDF.ObfuscatedNameObject further support a malicious intent, 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` `9086f7cf0cfa1bde4e0edcb131df60d4d472c00e4958e0a1f8f1b2f27c9762a6`	pdf-javascript-stream	PDF /JS object 6 at offset 0x1A7	4967 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).

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