PDF malware analysis — malicious · 1faebd8f20d288ff

MALICIOUS

PDF

6.7 KB

MD5: 152e846653bb8971a72c4c6e45b80e43 SHA-1: 470b5bb645f7193f5cccb473e9e0373ad7cf4ff5 SHA-256: 1faebd8f20d288ff48d50684902e67c1d9fe4c09cc5fe262481cf2ce3f10d0d0

178 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript and triggers a critical heuristic for CVE-2008-2992, indicating exploitation of a known vulnerability. The presence of JavaScript and the specific CVE exploit suggest the document's primary purpose is to execute arbitrary code. The embedded JavaScript stream, identified as 'javascript_obj0006_000.js', likely contains obfuscated code designed to download and execute a second-stage payload, although its exact functionality could not be fully determined due to obfuscation.

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` `b2d73f4c09602b517156cbaeaef9a5f534a261dbe8744559fb9eca27521fb756`	pdf-javascript-stream	PDF /JS object 6 at offset 0x199	5584 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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