PDF malware analysis — malicious · d6e119196845e41f

MALICIOUS

PDF

76.5 KB Created: 2010-03-08 18:18:44 Authoring application: dcOLKLvo8XvLzI (via BWTKsNEueXy3)

MD5: 6cbfb491e02032749f604334faa6c24d SHA-1: eaea9c5a76efbca1bfcf76fd8f92c7323b54da66 SHA-256: d6e119196845e41f50547761e14cb0a9f615502edc8a4299d21a0b78cdb8cacd

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including PDF_JAVASCRIPT, PDF_JS, and PDF_EVAL. The JavaScript stream, named javascript_obj0007_000.js, is heavily obfuscated using String.fromCharCode and eval() calls, suggesting it is designed to download and execute a second-stage payload. The obfuscation makes it difficult to determine the exact actions without further dynamic analysis, hence the confidence level.

Heuristics 5

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.
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape 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` `774778ee8676eaaf4556a403d6a68560ce364558cde8b8ccdfdcbf8d32a3361e`	pdf-javascript-stream	PDF /JS object 7 at offset 0x23E	77122 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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