PDF malware analysis — malicious · cebf66e3d919d04a

MALICIOUS

PDF

13.1 KB

MD5: e612a7f789aa282dbfba7acef323156e SHA-1: 24a6dd14b2c0df40aa9b3077b1ab2d1433a911e4 SHA-256: cebf66e3d919d04ac106c95b72f0f1ad9139cf47ba52f41af675bfcc23b4cf5e

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious Link/Object: Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). This JavaScript is likely designed to download and execute a second-stage payload. The presence of multiple deobfuscated JavaScript files and ClamAV detection as Pdf.Exploit.Agent-36062 strongly indicates malicious intent.

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` `54c8fd3443767908957699d659b8987e11ded8a4a9e997862c8288c547878288`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12866 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `0de2133929c8d941bf2b7612c185e1877df8174807c7b043faf6fa7beeea3f89`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5306 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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