PDF malware analysis — malicious · 43d2481862059715

MALICIOUS

PDF

14.9 KB Created: 2010-01-29 02:25:22 Authoring application: isNCpNBJFBRCmOUQU (via ZJOmpLWXaHswswxQp)

MD5: f7107e4c6f41d1e0c4eccbc51d3164dd SHA-1: c42e626a257be0bd7e949ab6149fa5822aedeb71 SHA-256: 43d24818620597159f5eaea56e1e28c4a5a0bd67194467b8695bc03dfe1cfa1d

108 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, flagged by multiple heuristics, and is detected by ClamAV as Pdf.Dropper.Agent-7685776-0. The ML classifier also strongly indicates maliciousness. The embedded JavaScript, named 'javascript_obj0007_000.js', 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 0.9999

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7685776-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7685776-0
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `2aa26982d97e80b91bd95ba804bb4f4bbbffa6f41fa74a8d0e2322fb975c0b41`	pdf-javascript-stream	PDF /JS object 7 at offset 0x45B	13409 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s). Carved artifact contains 5 long base64-like blob(s).

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