PDF malware analysis — malicious · 414e56993c58fcc9

MALICIOUS

PDF

11.9 KB

MD5: b549c3aa8504cdb45c230c545f573bcc SHA-1: 1d3625ed2f9317c668cae9963faf36df3e47031d SHA-256: 414e56993c58fcc92c09b0f79bad2fb8b3c1c243d491b32e4f633a983c0be1da

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. Specifically, the CVE-2007-5659 heuristic indicates the use of the 'collab.collectEmailInfo' method to execute JavaScript, which is a known technique for exploiting Adobe Reader vulnerabilities. The extracted JavaScript files, 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggest a multi-stage loading process. The primary intent appears to be the execution of further malicious code, likely a downloader for a second-stage payload.

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` `dff9cdfab0fe70aefd1ef35943260b7955a0550dffc6af5225b84b4e3763ab15`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12123 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `8f853eb14c86b6ee2e407eec803c889a234d6d83e60c329d691c1e76db9d4a22`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5030 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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