MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1204.002 Malicious File
T1059.001 PowerShell
The PDF file contains embedded JavaScript and utilizes filters like ASCIIHexDecode and ASCII85Decode, which are often used to obfuscate malicious code. The critical heuristic firing for CVE-2008-2992 indicates the exploitation of a known PDF vulnerability via the util.printf function. This suggests the file is designed to download and execute a second-stage payload.
Heuristics 6
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util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992PDF 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)
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ClamAV: Pdf.Exploit.Agent-36183 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-36183
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ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEXHex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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ASCII85Decode filter (with exploit indicators) low PDF_FILTER_85ASCII85 encoding filter present alongside exploit delivery indicators — uncommon outside of obfuscation
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0006_000.jsf86b1e5220183f7c7e3ea8cddca0c8beed42f4aca8952f8c95b07b9823f2ed6e |
pdf-javascript-stream | PDF /JS object 6 at offset 0x138 | 1345 bytes |
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