PDF malware analysis — malicious · 1ca6de89257813a4

MALICIOUS

PDF

13.1 KB

MD5: b30a5d0b847cd51187db151ad816b8fe SHA-1: 9c7a287796bc1e045a14071ca166bc66740a3dc3 SHA-256: 1ca6de89257813a446ff618c5e12cab25d4e142fc9445c7a7e3ac0ded8d04467

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that exploits CVE-2007-5659 via the Collab.collectEmailInfo method. This exploit is designed to execute arbitrary JavaScript. The presence of deobfuscated JavaScript files and ClamAV detection as 'Pdf.Exploit.Agent-36062' strongly indicates malicious intent, likely to download and execute a second-stage payload.

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` `951016eefb40266b3d648dee2112f6bae2b94f9620f44805e29b4647c87f96f0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12828 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `a7067445c561f2bc809a8755fd7bfa31628ca1ebc6c3442c88ccab56aecabdc9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5301 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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