PDF malware analysis — malicious · d9c476f902094f30

MALICIOUS

PDF

12.0 KB

MD5: 0811da439886088457be5b8fed64555c SHA-1: 7b036515032025381d7c21f82c94d1969e203568 SHA-256: d9c476f902094f30722798ec28a6d79ffde3db3db215fc72bbd59a00e6f1fb4b

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by multiple heuristics including PDF_JAVASCRIPT and PDF_JS. The critical CVE-2007-5659 heuristic indicates the exploitation of a known PDF vulnerability using JavaScript. The embedded artifacts 'legacy_pdfkit_stage_000.js' and 'legacy_pdfkit_stage_001.js' are deobfuscated JavaScript streams, suggesting the script's purpose is to download and execute a second-stage payload. The ClamAV detection further confirms 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` `315474df8c736daa5473d989591edc5d8d4408bdfcc0baba95e8341adffacb19`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12247 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `5c3e7aac3d740153d2f4c1fd400090b3b03328489ed34ca17c513dae286c6b79`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5110 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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