PDF malware analysis — malicious · e9cc7ee84f03c47f

MALICIOUS

PDF

12.0 KB

MD5: bdeb771b970f7a10fabde9385ce3373f SHA-1: 0f55a55f86ca9509f0715242e32086e2c96dfcef SHA-256: e9cc7ee84f03c47f3e0d0bddc3277cc6b183d522404c4f9fa2cb19368e4a6b5c

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 CVE-2007-5659, which is known to exploit vulnerabilities in PDF readers. The extracted JavaScript files, 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggest a multi-stage exploit. The ClamAV detection 'Pdf.Exploit.Agent-36065' further confirms its malicious nature. The primary attack pattern involves leveraging these embedded scripts to execute arbitrary code, likely leading to the download and execution of further malicious content.

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` `714a8cfdf9572cf808ac29587c548822c111a868eb77308e445e26ef9b42526e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12268 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `c8dae84370bb8c86489593c08ebee1772db921eafe5a1e0a51933908ef3f16cc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5070 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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