PDF malware analysis — malicious · 2dda2a78b586a311

MALICIOUS

PDF

13.3 KB

MD5: d9d37f8491ff7e39d55db5eae1053105 SHA-1: 3b596b3f87681bad43725bce86492df79db18798 SHA-256: 2dda2a78b586a311afac854c91caf01eb5126f9aaaabeac2d781755bc6d927d8

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability, specifically targeting the Collab.collectEmailInfo function. This exploit is designed to execute arbitrary JavaScript, which in this case is further obfuscated and likely intended to download and execute a secondary payload. The presence of deobfuscated JavaScript files and ClamAV detection as Pdf.Exploit.Agent-36064 strongly indicates a malicious exploit delivery mechanism.

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` `e3a3feb5a23e908c44567d39f5bedfd9f8f78db10ee3794ed93a274e965e5b93`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	12421 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5d231ce12565691b2f23e40c76efa6fcf752f0f20e2857bf14c01368493bf74e`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F2	5216 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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