PDF malware analysis — malicious · 9aa024eed6e66561

MALICIOUS

PDF

11.9 KB

MD5: 1672c26d8e2f53d58d4a5a12960a84b5 SHA-1: 969b61cacc7b44bbf0e7fa99b26fe2655b5d4a7c SHA-256: 9aa024eed6e665619073f0f6b627f98811f143d4a631895b31f25d4349f6dbcf

140 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 known exploit targeting the Collab.collectEmailInfo function to execute this JavaScript. The JavaScript is further obfuscated and split into multiple files, suggesting a multi-stage payload delivery. The exact intent of the script is unclear due to obfuscation, but the exploit and embedded script strongly indicate malicious activity.

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` `bf2766e76fe446cb86d605bad51d241d77bb708c701dd087eb6cb97364d2e6bb`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12314 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `a256e454c78ffdd8efa50ab3a91bcdeceb79058ae02c1771bd2b123be1be7a83`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5096 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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