PDF malware analysis — malicious · 31d37b8bfda2049a

MALICIOUS

PDF

2.7 KB Created: 9090-01-01 Authoring application: 557

MD5: 53626f71df68e80e681ff70397d87c57 SHA-1: cf34e8fba5a3908f7c91af83926677b0acfe92bb SHA-256: 31d37b8bfda2049aa313795f989025ea6f7f1b460779fe1cdfd816d3021c394d

96 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Exploit.Agent-36014' strongly suggests this is a known exploit. The extracted JavaScript file, 'javascript_obj0013_001.js', shows signs of obfuscation, typical of malware attempting to hide its malicious actions. The primary function of the embedded script is likely to exploit a PDF vulnerability and download a secondary payload.

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` `876a834223f1e3b4459cc2286dc7192012437623ac5b34b4c7bba443b9a3a7c1`	pdf-javascript-stream	PDF /JS object 13 at offset 0x328	5201 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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