PDF malware analysis — malicious · c590afe2adb1f4c7

MALICIOUS

PDF

13.3 KB

MD5: c1376a928a2026bbfab02bf33c06bf49 SHA-1: 9ef70a09a3954ef9952bbb81b09f6b806b4af86d SHA-256: c590afe2adb1f4c70c1c0071643eb1971defba09bc24c3e723aeb696fbea6910

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious JavaScript T1059 Command and Scripting Interpreter

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. The critical heuristics indicate the use of JavaScript to launch further malicious activity, likely downloading and executing a second-stage payload. The presence of deobfuscated JavaScript files further supports this conclusion.

Heuristics 5

Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `4bb76ab6adab66404ecb6360b519463f34ff0aa824190f3860f988b44badcdd4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12460 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `dba8db8ffa5e0e9cc221cfb842287d58febfb0b98971c7fc980ceddf92c513cb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5192 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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