PDF malware analysis — malicious · ab2eb5fdfa6f5188

MALICIOUS

PDF

26.3 KB Created: 2011-72-51 03:25:00

MD5: d5fa1538bc266e0fe75a11a0965ffe98 SHA-1: 86abad59eff8deedae85a785de3c108d27637bcc SHA-256: ab2eb5fdfa6f518883032dc53c014cb6149039a1cc242d4f67914e15f17e62b1

90 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, which is flagged by multiple heuristics including a high-confidence eval() call and a ML classifier. The JavaScript stream, named 'javascript_obj0001_000.js', is likely responsible for executing obfuscated malicious code. The exact intent of the script cannot be fully determined due to obfuscation, but it is highly probable that it attempts to download and execute a second-stage payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
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_obj0001_000.js` `d09e95cf19472f10282f256089bc8a6d1b7da0529f19cc07dd9eed58585a9921`	pdf-javascript-stream	PDF /JS object 1 at offset 0x64D4	883 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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