PDF malware analysis — malicious · 2bc2a914e3c9c278

MALICIOUS

PDF

12.0 KB

MD5: dbeb5a60036e9355c1f1f091af23d972 SHA-1: 016ef9297b9f78bdff06aebaac9025d2a3c90705 SHA-256: 2bc2a914e3c9c2781635954a3f0d796461f2ff34ee720635eeb7a97b4f9d6478

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, specifically leveraging the 'collab.collectEmailInfo' function which is associated with CVE-2007-5659. This exploit is designed to execute arbitrary JavaScript. The analysis also identified two deobfuscated JavaScript files, 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js', suggesting a multi-stage attack. The primary intent appears to be the execution of malicious code through a PDF vulnerability, likely leading to the download and execution of further stages.

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` `8c3b63cab04f16bae3c4d7b825fc0cca07a416b04fbc3d17dc57f0b80c2ff60d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12312 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d686230d859cbc86c409702e78e1a991a7bb36018b7850ca71a00135f3cfd7d7`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5074 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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