PDF malware analysis — malicious · a8ced0686dba343a

MALICIOUS

PDF

11.4 KB

MD5: e4fd250006c01f3c08400332f9c5b036 SHA-1: 575c8b079be0e178e3a0e5a36622b33b62c1707b SHA-256: a8ced0686dba343a1e69719d8bfc719c3fc2641f252e2717af88e9b6281c0cf1

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript that exploits the CVE-2007-5659 vulnerability. The heuristics indicate that this JavaScript is used to collect email information and is likely part of a multi-stage attack. The deobfuscated JavaScript files suggest the execution of further malicious code, typical of a downloader or initial access exploit.

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` `173455f40a233a6d16802e754cba91dc07030963780b11d708861e11623e7c15`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	11758 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `3b519cd066be204f55b46c23cdb1186f37941af8def17064aeeb6e3445598a1f`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	4854 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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