PDF malware analysis — malicious · eb383f323a9bbdbe

MALICIOUS

PDF

12.2 KB

MD5: b1930ee9c45d3556958773f96784666e SHA-1: 196ed95db820fab3bfdf91b9976c82e1a32ea956 SHA-256: eb383f323a9bbdbe74d2c73d51a2559fcc89d90750fe0530006a2a4461ae8d4f

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically identified as exploiting CVE-2007-5659 via the 'Collab.collectEmailInfo' function. This function is known to be used for arbitrary JavaScript execution within PDF documents. The presence of deobfuscated JavaScript files suggests a multi-stage loading process. The primary attack vector appears to be leveraging this known PDF 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-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` `027fce831310f79d404c1e4e3a1ff0f179ddc8624d5726c8d29394d6a27909a7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12572 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `8bd38aad9dcf8d43141437400139b06d0ca02bb243152ef69a994afcf3153eec`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5233 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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