PDF malware analysis — malicious · 7ed224944dbb5be5

MALICIOUS

PDF

12.6 KB

MD5: 21311321db7cee30a7450c4e34ba32c3 SHA-1: 9a949a475801bee95a9c7903e32f10b4661ea787 SHA-256: 7ed224944dbb5be5c31f0c27e8e5a462a6680e5af2a0c4a9e438b6de9f9276aa

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically using the Collab.collectEmailInfo method. This JavaScript is designed to download and execute a secondary payload, as indicated by the presence of deobfuscated JavaScript files. The ClamAV detection further confirms its malicious nature.

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-36064 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36064
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` `a5c8f0f722df4dd9876a0087e1eee65bd3020c5995f94f6729f7e17f3f3677a0`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	331 bytes
`legacy_pdfkit_stage_000.js` `4c9b7f8bbcd823eda72af43d359058b1a9eca475b1565d8e07e3f7b9e3ccdd20`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	11840 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `b8ebb97b5d8230a0a688562881a53794dcc407a1d9d15591a54a3580fe298bcf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	4871 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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