PDF malware analysis — malicious · 2ba508784d995775

MALICIOUS

PDF

12.7 KB

MD5: 2ab6c9a9a591044fed74f0917ee25741 SHA-1: a93d79f6f3cd774e86ce6c0098da75896b4a24c7 SHA-256: 2ba508784d995775ab6169f5c3e39c5431ef9590a7219fc001dff474dc0641e4

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 the Collab.collectEmailInfo JavaScript function, a known method for exploiting vulnerabilities in older PDF readers. This function is used to concatenate and evaluate JavaScript, suggesting the file's purpose is to download and execute a secondary payload. The presence of deobfuscated JavaScript files further supports this. The ClamAV detection confirms the malicious nature of the file.

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-36062 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36062
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` `068944f8c011a88ab770b45c6de142b9305a1f515d410204d5eadd9ac2b5bfb3`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19B	373 bytes
`legacy_pdfkit_stage_000.js` `9d7954f82b9f492dfe5c14888af19ba5837ae83e3108caab34be967d454f9aef`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	12395 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `118f7960d31ccf4594566713d8f79daa8b6fb8412069c921de411b4728866efc`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	5113 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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