PDF malware analysis — malicious · db06a436d68a5221

MALICIOUS

PDF

12.1 KB

MD5: afd0c12a35b14e7f7411f5a604eb3663 SHA-1: 48e5a677e5ad3fc1ccb36c2858560affcf0c3994 SHA-256: db06a436d68a5221b597a74ecf4e43ce1659d1ddb57dd110f60405ce3d870296

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, identified by the PDF_JAVASCRIPT and PDF_JS heuristics. Critical heuristics indicate the exploitation of CVE-2007-5659 via the Collab.collectEmailInfo method, which is known to execute JavaScript. The ClamAV detection of Pdf.Exploit.Agent-36065 further confirms its malicious nature. The presence of deobfuscated JavaScript files suggests the script's purpose is to download and execute a second-stage payload.

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` `be000fe9d78c9dd615efb7629f8879166630f46aacb33b5f293955290adf28ee`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12304 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `4a41b4325cca22c8549aa4875fcd95079db27bf7f5d7d6c4dabaf456a0453837`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5123 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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