PDF malware analysis — malicious · d6b9612d2c836378

MALICIOUS

PDF

12.2 KB

MD5: 9ba31cd8f7a3b805b4ea96c1ddd84dff SHA-1: ccbfa1cca3893096375498edfed4ae9f2b670115 SHA-256: d6b9612d2c836378db3d4e9d7e3c6d41be5a62f7fa398ed4c4e384e90ba6d389

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the use of the Collab.collectEmailInfo JavaScript function, a known method for exploiting vulnerabilities in PDF readers. This function is used to construct and execute JavaScript code, likely for downloading and executing a secondary payload. The presence of deobfuscated JavaScript files further supports this. 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-36065 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36065
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` `9c67560e8c63b720885d3efc1627b844b86a6ec08e99e5b65a22eae832045756`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19C	431 bytes
`legacy_pdfkit_stage_000.js` `27e8cf618215de068b4567375f624340f71408d60212085cdbb185a65e76d5d9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12457 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `194c88f627b6839170608ed3e4a2e9fd56f736f7c3caf9da135b942c6f588d51`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5179 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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