PDF malware analysis — malicious · 1c03c7704bc997c4

MALICIOUS

PDF

45.0 KB

MD5: f82f555ff2e041ee3ea74cafef7cd34b SHA-1: 12ab0fdb343192e1be174a668d7f0da0f557834c SHA-256: 1c03c7704bc997c482c65f5be13ad0dc91afc70049a187d4edf7669d32cf706e

106 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is identified as a malicious PDF by ClamAV and a machine learning classifier. Embedded JavaScript, detected by heuristics, is likely responsible for executing an exploit. The ML classifier's high confidence score and the ClamAV detection strongly indicate malicious intent, likely involving the exploitation of a PDF vulnerability to deliver a payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36128 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36128
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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `b8723e12e084e6869872013bbf5be29562b5abffc72390d188c7061822312196`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	45305 bytes
`legacy_pdfkit_stage_000.js` `6bf03d9f04637ec17d269bb751a3743fb78020cf7d1801a7d7881e661fd707f5`	deobfuscated-js	double percent-decoded annotation JavaScript at offset 0x1E7	33047 bytes

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