PDF malware analysis — malicious · 9d932ed5b4a653ec

MALICIOUS

PDF

11.9 KB

MD5: da5e196b3a6990591a691c977caa6b0e SHA-1: 215b5b90569fb0d55ac7a6ed9419d16514d44872 SHA-256: 9d932ed5b4a653ecf2a55a2f50c687c5e38c1c0b7dfe6612ffb4751d5216b443

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. The critical CVE_2007_5659 heuristic indicates the use of a specific exploit targeting the Collab.collectEmailInfo method to execute JavaScript. This JavaScript is further obfuscated and split into multiple files (legacy_pdfkit_stage_000.js, legacy_pdfkit_stage_001.js), suggesting a multi-stage download and execution process. The primary intent appears to be the execution of arbitrary code via the 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` `c32a1db7bd2757469ef49bee78c324eceb2faeb5b3d3e1782eab191366a205a4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12192 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `87413f7639183f3e5e3c8d6cba50bec5e13185f3efb16bebe0bded420b2c088d`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5068 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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