MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 JavaScript
T1204.001 Malicious Link
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The PDF document contains embedded JavaScript and utilizes ASCIIHexDecode and ASCII85Decode filters, indicating obfuscation. The critical heuristic firing for CVE_2008_2992 (util.printf) strongly suggests exploitation of this vulnerability. The embedded JavaScript is likely responsible for executing the exploit and downloading a secondary payload, although its exact function is obscured.
Heuristics 5
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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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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.js83c8a5ec6859407c31b39b3125bcbb28518ebf6aab42b4fa693ae02f089c80b5 |
pdf-javascript-stream | PDF /JS object 6 at offset 0x138 | 1333 bytes |
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