PDF malware analysis — malicious · df46205ecec80341

MALICIOUS

PDF

12.2 KB

MD5: e5be00dcd2aa10e501ee4db33c774aa1 SHA-1: 15a1e2c9c7f991ce6cd5cd434be532baef2b9d35 SHA-256: df46205ecec803419f2ab408ab5c2d195096856b1a3cad536bc43db9f1f1bbcd

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, flagged by multiple heuristics as malicious. Specifically, the CVE-2007-5659 rule indicates the use of the Collab.collectEmailInfo method to execute JavaScript, a known technique for exploiting PDF vulnerabilities. The extracted JavaScript files, legacy_pdfkit_stage_000.js and legacy_pdfkit_stage_001.js, suggest a multi-stage exploit. The primary intent appears to be the execution of arbitrary code via the embedded JavaScript, 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` `bc7ecf234775e36899d7cdb451468dccd7f1a366af8b694f1a522998ee6d7046`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12497 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `d1c61628693e13ec20ce5284a911785ccdc3964c8e55c0f40deab65a9d33683c`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5202 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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