PDF malware analysis — malicious · e66ef9518fb5415f

MALICIOUS

PDF

12.9 KB

MD5: f645f0191d8c80a8362e65ba77d2345d SHA-1: 2b497ff87484ec37d3922bbb1f69b180be7a9f39 SHA-256: e66ef9518fb5415f5739cc2ad5faf045d9e12ff0e59697e8d07fe038971481f8

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 exploitation of a known PDF vulnerability using the Collab.collectEmailInfo JavaScript function to achieve code execution. The ClamAV detection further confirms its malicious nature as Pdf.Dropper.Agent-7317412-0. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, a common dropper behavior.

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.Dropper.Agent-7317412-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7317412-0
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` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `eb1ad456640b8d833dd6d632d4a94935e752f7be703fa1e24c61f0a54c9c349c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12640 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b69b156b62b56458e2e748a4b500965f11f038861ee86367d7fc1cc1a8fae476`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5183 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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