PDF malware analysis — malicious · 577a5afd0bbc8196

MALICIOUS

PDF

12.3 KB

MD5: 056b95e5a109402c984dd3db6b3cec5c SHA-1: d790737fa6ebe9caf5973ab31edeb7b0f89728e2 SHA-256: 577a5afd0bbc8196eb4c76ee4307464d899f5e2d505b9dd49801f646ebf57801

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT and PDF_JS. A critical heuristic identified the CVE-2007-5659 exploit, which leverages the Collab.collectEmailInfo function to execute JavaScript. This JavaScript is further obfuscated and split into multiple files, suggesting a multi-stage attack. The presence of these elements strongly indicates the file is designed to exploit this vulnerability to deliver a malicious 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-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` `0658eb74ccba5ad2d6d5030cc974e0d0de146a57ee84d8e54340f1a2d791984c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12133 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `fcd309d0e27ec116a3f86203cffd2704c9c9238b0673812a8f4a815435071e79`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4926 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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