PDF malware analysis — malicious · e0ae0138240516cb

MALICIOUS

PDF

26.6 KB Created: 2006-02-01 14:14:12 Authoring application: Wegoptyr (via HghTc6Fs)

MD5: 0ff83ec85bcacd18ad89ad95700605a6 SHA-1: 18c2e5a02d4129222d0e315325509326d910fc09 SHA-256: e0ae0138240516cbb2c8a6721eba58672c36953bfcca560b86982014985d6c23

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged as malicious by ClamAV and a machine learning classifier. Heuristics indicate the presence of JavaScript, including an eval() call, which is commonly used to deobfuscate and execute malicious code. The embedded JavaScript appears to be heavily obfuscated, making it difficult to determine the exact payload, but the overall pattern suggests a dropper designed to download and execute further malware. The file's metadata indicates it was authored by 'Wegoptyr', which is not a standard application name.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Dropper.Agent-7314506-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7314506-0
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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_obj0007_000.js` `7bfc406949aaba11d12c03522f7afe365c29752e692fd6f689bc43644866ffb9`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1EE	26136 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).
`javascript_obj0007_001.js` `f6ae2210410d2402582e1a06e60cdef599d51700791903a067c74a4f9ff47ba6`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1EE	411 bytes

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