PDF malware analysis — malicious · 9eb441f07c8aaa65

MALICIOUS

PDF

12.0 KB

MD5: 01aa93ff1592a648ff1dcac372ed36d4 SHA-1: 27b8132fdc64e6287caaa0929c7463fb7df96010 SHA-256: 9eb441f07c8aaa65e6e191d7cca52c848d264dc79871b4d6f7f6c9b9f8c1f069

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. A critical heuristic, CVE_2007_5659, indicates the exploitation of a known PDF vulnerability using JavaScript. The embedded JavaScript streams, named legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, are likely responsible for executing the malicious payload. The exact intent of the script is not fully discernible due to obfuscation, but it is clearly designed to exploit the PDF reader.

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` `3f454e0875286a26fee6e15e8fa259b65c1a69112a810ea23d4a6ce6ef48d240`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12768 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `9307a7ce3be866f35e62ee9619378bada9a8f42c604367d995d4f29ed0218a16`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5256 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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