PDF malware analysis — malicious · a70574f4b72c8ad0

MALICIOUS

PDF

12.8 KB

MD5: dd47dd38918ec2179a1b6bce22452a85 SHA-1: 755dc3ed4e44f3febbf2ae67eec77478c1aa3a6e SHA-256: a70574f4b72c8ad0dc3e31af3d1e1458df5b2c227ccef0b900fdfe92b18f2935

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. This exploit is designed to execute arbitrary JavaScript, as indicated by the critical heuristic firings and the presence of deobfuscated JavaScript streams. The primary function of this script is to download and execute a secondary payload, as suggested by the extracted filenames 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js'.

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` `5c36d8519a0cb8353af605bb9df408b3c709c4a31945b21182fa8146dba0b764`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12495 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `40152b3f56d1c073646af5d3f1435df8f165129b97723460d1b0f32fc8df6e5c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5130 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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