PDF malware analysis — malicious · c90dcd69ba9bc0eb

MALICIOUS

PDF

12.9 KB

MD5: ee9d49096d322b7e327dfeaae6b47597 SHA-1: fa91a7d9a6f64d8247de5b52e1edce85c9c264b9 SHA-256: c90dcd69ba9bc0eb7ccb2832aa3011bc4b29a1e098ceb8e9b58fabd071686f14

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits CVE-2007-5659, specifically targeting the Collab.collectEmailInfo function. This JavaScript is designed to download and execute a second-stage payload, as indicated by the presence of deobfuscated JavaScript files ('legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js') and the ClamAV detection signature 'Pdf.Exploit.Agent-36062'. The primary attack vector is the exploitation of a known PDF vulnerability.

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` `174983b8b4d9a8f6e22e67784c19141fdfdf24a0d3be59d26cb68d48842ff5a3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12634 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `622e15d63249b5f40c6920e67a918f48dd19196f2678f634e1ad5bf8352090f5`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5254 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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