PDF malware analysis — malicious · f1ea6730298566ac

MALICIOUS

PDF

13.0 KB

MD5: c3ba9a8b2a48469757a42f775158448a SHA-1: 7ed4a54e38b77d393751f9c0247f12c7179cba78 SHA-256: f1ea6730298566acd1ec337f1a837e75c17b6494c558ef3323a9a6d6710c4fe9

138 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically using the Collab.collectEmailInfo method. This JavaScript is further obfuscated and split into multiple files, indicating an attempt to conceal its malicious actions. The primary function of the embedded scripts appears to be the execution of further malicious code, likely a second-stage downloader.

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` `920fa0e33d58e8eeab7b9268c353a0c8c0fbc1d09d59559eb3dfac5d952066b3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12231 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d81ace988953f88e7523f8fa6ddc6f90f5e9e243a4170fcf6a1f7e3d5a2a2a51`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5016 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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