PDF malware analysis — malicious · e15f270d3fc9fd3c

MALICIOUS

PDF

12.1 KB

MD5: 2a17c92aab96ddfce0ecb42af989a360 SHA-1: da48f5b1fedec90df1f5923989e0c42fb5022c29 SHA-256: e15f270d3fc9fd3c4667468a04684d6d8909b04e76d87ae70a7048a6a3d7e160

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically leveraging the CVE-2007-5659 vulnerability via the 'collab.collectEmailInfo' function. This function is known to be used in PDF exploits to execute arbitrary JavaScript. The presence of deobfuscated JavaScript files ('legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js') indicates a multi-stage attack, where the initial PDF likely serves as a dropper for further malicious activity.

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` `56086ab8e6819c9562a84466edbba59346853f31d0e9e9d649925027a997fdaf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12506 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `bec016cc45bd024f67d0a3af6f353e1efc34f9bf0d2f1c37657a50355352d7b6`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5109 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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