PDF malware analysis — malicious · cc8a7b216a46e5ea

MALICIOUS

PDF

3.6 KB

MD5: 0521d6e4eb78868169f97efc7e8e1c8a SHA-1: 428510dcf64a2a1b251b6c69aa84048b0649fee3 SHA-256: cc8a7b216a46e5ea2d5cd7e54db17aacd39994dedcfbf5ddb313c8be4c746c6e

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged by ClamAV as Pdf.Dropper.Agent-7596899-0. Static analysis revealed embedded JavaScript, including an eval() call, indicating obfuscation and execution of arbitrary code. The presence of two JavaScript files, one deobfuscated, strongly suggests the PDF's primary function is to act as a dropper for further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7596899-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7596899-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0009_000.js` `ac36bc9becb1be4c608cab41a3565401f72c13e51956ce49fcff77fcfdf68772`	pdf-javascript-stream	PDF /JS object 9 at offset 0xD6	58956 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `cacd873edadc4f73ca4e548cda47181b7d4500b90022cea6bdb001d49887c894`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0x149	7101 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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