PDF malware analysis — malicious · d69b66dd69dbf8a6

MALICIOUS

PDF

12.2 KB

MD5: c65950b255d28ff60d5a00441edc6791 SHA-1: d9d3985195bf634e89f35e4ab46dc05ddbb6c072 SHA-256: d69b66dd69dbf8a66a383bd42c3d3231623e4726621263cfed2b5355fb0609e5

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 a vulnerability in PDF viewers. The extracted JavaScript files, 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggest a multi-stage attack. The primary function of the embedded script is to exploit the CVE-2007-5659 vulnerability, likely to download and execute a secondary payload, as indicated by the ClamAV detection of 'Pdf.Exploit.Agent-36062'.

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` `96b4bc0f4e4032713b177c7a1cffb496d7977bc1e196f096de887e64c469d451`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12079 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `8d9967e6126389676bc4415ec2d1b00f0e6b5c8969ba2c1b5c02d8436d11301f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4968 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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