PDF malware analysis — malicious · 9695b1a2d20891d7

MALICIOUS

PDF

12.8 KB

MD5: 0c67b0cf9ef71d8d31c23e28c1bbbbe7 SHA-1: a1b8ceb02dcee6d8898d35d4ce54acbae16e53b7 SHA-256: 9695b1a2d20891d77a8e8fc6e36d8e020717800e7dc9a97f64b110d7ee518acc

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript that leverages the CVE-2007-5659 vulnerability (Collab.collectEmailInfo). This JavaScript is designed to download and execute a second-stage payload, as indicated by the presence of deobfuscated JavaScript files and the ClamAV detection signature 'Pdf.Dropper.Agent-9448646-0'. The attack pattern is consistent with a PDF-based dropper.

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.Dropper.Agent-9448646-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-9448646-0
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` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `3556bc932a36ba2b4473617976e83c933604be0eaa2983dd9be4132b66a703c0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12514 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `6ef6cb45ebaccff9b3f407cdbbf1794f2659ef5367633cec29011671bd31837a`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5146 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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