PDF malware analysis — malicious · a571d450d0575dab

MALICIOUS

PDF

11.9 KB

MD5: ea4362d02389529b7b7bc9ed2d1a8d72 SHA-1: 10dd568789ca3c9066c19f27c2909b4631956616 SHA-256: a571d450d0575dabf8cea83dca6187912cd7c51c7138e860fee3ef665d4c7c69

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The critical 'CVE_2007_5659' heuristic specifically points to the exploitation of a vulnerability using JavaScript that is constructed by concatenating info fields. This suggests the PDF is designed to exploit this CVE to run arbitrary code. The presence of deobfuscated JavaScript files ('legacy_pdfkit_stage_000.js', 'legacy_pdfkit_stage_001.js') further supports the malicious intent, likely to download and execute a second-stage payload. The ClamAV detection 'Pdf.Exploit.Agent-36065' confirms its malicious classification.

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` `756cf63610e99dd2fc2b91369d60144254996ef85e5173973817ffff49dffd29`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	12257 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `ca9f4314a509eb7ccbdf5fe230a95624b0525223fb0b8ad882d88abb4668f3be`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x315	5069 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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