PDF malware analysis — malicious · cc969d3bb19e498e

MALICIOUS

PDF

12.3 KB

MD5: 39a9a9db429ec170c6c38a1456d8929d SHA-1: c562e22ef6349adaed5058ec60f34e09d94d3ca4 SHA-256: cc969d3bb19e498e92c99196eeb0b076315fa8d0cbd92677fb9814dcf045b062

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 method, which is known to be used for exploiting PDF vulnerabilities. This method is used to construct and evaluate JavaScript, likely for downloading and executing a secondary payload. The presence of deobfuscated JavaScript files further supports this. The file is classified as malicious by ClamAV with the signature Pdf.Exploit.Agent-36062.

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` `a2c75f4824171610284d12be218d0870d27571844dc5b40768772d94e1b6b1e2`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	11921 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `09e63e249d6638b5fb8005cac92124fa24285da4b578a5cf5f0c21607ed1ba97`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F5	4893 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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