PDF malware analysis — malicious · e1a8cf594cbf6f84

MALICIOUS

PDF

12.6 KB

MD5: dffc63ba29f9dbedae874ba342564210 SHA-1: 1b9436c12f946cfab8420ac6b5ffbf3040c368b8 SHA-256: e1a8cf594cbf6f84b3973c9c3bc15d7a6b759db0698255788c39d049df511139

140 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 script is designed to download and execute a secondary payload, as indicated by the presence of deobfuscated JavaScript files and the ClamAV detection signature 'Pdf.Dropper.Agent-7314980-0'. The attack pattern involves exploiting a known PDF vulnerability to achieve arbitrary code execution.

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-7314980-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7314980-0
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` `c96102113ccdbbc5fec4276e3877272c9282b6e5cd2b411036bc257a6bbf6e93`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12264 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `2725a7221dbfb6a926c300336e06e82c0dab9b8551fedd71fc3e8d4c162b2186`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5049 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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