PDF malware analysis — malicious · d76fcbfdf3a6deb0

MALICIOUS

PDF

2.7 KB Created: 9259-01-01 Authoring application: 9729

MD5: fc39190de2225dbd2d8eddbb094d53b1 SHA-1: 069c60df2902120be8205cc7fa6612fef6cfdaf0 SHA-256: d76fcbfdf3a6deb0acb841b5da346e07d7ed9b220bf9f284c3f1d6f9103bbae3

126 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, flagged by multiple heuristics including ML and ClamAV detection. The embedded JavaScript stream, named 'javascript_obj0013_001.js', is suspicious due to hex escape obfuscation and script obfuscation indicators. This JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for PDF-based malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
Suspicious extracted artifact medium 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.
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0013_001.js` `309cc20d6a4c82c435ba537027071e7f15b71c9120af2652dbed11b984d863f9`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	4771 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).

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