PDF malware analysis — malicious · 64d2c7748b97c816

MALICIOUS

PDF

97.3 KB

MD5: 641e80ae765f3e18e9d4c094caf5257a SHA-1: ae29dfac15aea291144f841fa93fae552e3cee2d SHA-256: 64d2c7748b97c816c11cd87d6fcadfc6c20a3136c29269cc8e5967ca7f0a9c8b

308 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file exploits the CVE-2009-0927 vulnerability via embedded JavaScript. The JavaScript code, particularly the use of unescape() and the call to app.doc.Collab.getIcon, is indicative of an exploit attempting to download and execute a secondary payload. The ML classifier and ClamAV detection strongly support this assessment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 8

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution.
PDF JavaScript exploit cluster critical PDF_JS_EXPLOIT_CLUSTER

PDF combines an executable JavaScript/action surface with exploit staging indicators such as eval/unescape/fromCharCode, XFA script content, or a related CVE pattern. Benign form JavaScript remains low-severity, but this correlated cluster is high-confidence malicious behavior.
ClamAV: Pdf.Exploit.CVE_2009_0927-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.CVE_2009_0927-1
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits
Generic recovered JavaScript exploit stage high PDF_GENERIC_STAGE_RECOVERY

Bounded static stage recovery exposed hidden JavaScript through generic transforms such as null-byte collapse, percent decoding, marker replacement, arithmetic character codes, fromCharCode, numeric arrays, numeric-array minus-key decoders, alphabet-index arrays, /Producer half-difference metadata arrays, hex literals, marker-stripped Base64 literals, custom 6-bit XOR table decoders, or repeated-marker hex carriers. This rule is emitted only when the recovered stage contains exploit-like Acrobat JavaScript or shellcode markers.
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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `5460534e05544c7d5c6f1bf646fe68b0713d7db14db01802b2aea337a138765c`	pdf-javascript-stream	PDF /JS object 7 at offset 0x297	98727 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `64a8a12760c192ffeab00e3f6c4cc2de603f8f1ae83fc45e5e2a83367deaad76`	pdf-javascript-stream	PDF /JS object 7 at offset 0x297	42 bytes
`generic_stage_recovery_000.js` `5a93377fd8778e4be9674767184b648e5a787de7c2f065b2654f1088a5ffcb27`	deobfuscated-js	generic stage recovery percent-decode from JavaScript object 7 at offset 0x297	98719 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`generic_stage_recovery_001.js` `6676a3b1fa7ca069592d39c367c6a4d85fe3acdfefd45a61bb566269ed4d6a08`	deobfuscated-js	generic stage recovery percent-decode from combined JavaScript objects at offset 0x297	98762 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).
`combined_document_js_000.js` `33ee7b0e8e11c65c2e0022e4db62e18e4c369d28b057eb2e7b4f27505df06b66`	deobfuscated-js	combined document JavaScript streams at offset 0x297	98770 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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