PDF malware analysis — malicious · b17ebf42d9291005

MALICIOUS

PDF

12.4 KB

MD5: ec9038d71d61f3bb5fef3d443dd181c4 SHA-1: 096c5e3b8feccee84da009e13711ebf6c628ecd8 SHA-256: b17ebf42d9291005d97d655f82f307aca177675cf118a1f32d1d81bfa4af2706

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059.001 Command and Scripting Interpreter: JavaScript T1059 Command and Scripting Interpreter

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically using the 'Collab.collectEmailInfo' method. This technique is commonly used to download and execute additional malicious content. The presence of deobfuscated JavaScript files further indicates a deliberate attempt to hide malicious code execution. The ClamAV detection confirms the malicious nature of the file.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `8d0084662cad9eff51b01e6888bc7dc4a7130031a85a6c7f8bcbe9774883e641`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12200 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `7059822c826d6b445560c15bd3312e7f4f8003b09b6a44f4a182b97e3be9ee1e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5025 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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