PDF malware analysis — malicious · a7ddc0ab2636e08e

MALICIOUS

PDF

11.4 KB

MD5: 0b788eb5b1ff44dc91409fc323c41999 SHA-1: 4d137213defae7e0c8ce37431a3dcd91208dc6fe SHA-256: a7ddc0ab2636e08ec7e3f5184d541d060e1087f781040bb4be4d65c05ceeb2e1

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The critical 'CVE_2007_5659' heuristic specifically points to the use of 'collab.collectEmailInfo' for JavaScript execution, a known technique for exploiting PDF vulnerabilities. The deobfuscated JavaScript files suggest a multi-stage process, likely involving the download and execution of further malicious content. The ClamAV detection further supports its malicious nature.

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` `135e8e3b102509aba2ec491289e9826119ebf6e3200cfe49973d14883ec57a7b`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11778 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `97e1f26c444f32ff62e20751bd2a57ed49dcf80e2a76f86416b539efa962c1e2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4828 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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