PDF malware analysis — malicious · ee46ee7b91921070

MALICIOUS

PDF

2.6 KB

MD5: 2a3d080bc65dee7ce4749ee3ea7cf7cb SHA-1: def57496a9cb6678386337c79b53071d61e846e8 SHA-256: ee46ee7b91921070cd784883b7954d0fc4b881ee53bafe024f141d9eb2e1b195

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, PDF_EVAL, and PDF_FROMCHARCODE. The JavaScript stream utilizes eval() and String.fromCharCode() functions, suggesting obfuscation and dynamic code execution. This points to a likely attack pattern of exploiting PDF vulnerabilities to run malicious scripts. The exact payload or further actions are not discernible from the provided evidence, leading to an unknown family classification.

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. (matched inside decoded stream)
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_obj111611_000.js` `fdc9db488c767a3012eef5fcbd599de533290fed457920a6eb81a25bded313de`	pdf-javascript-stream	PDF /JS object 111611 at offset 0x197	256 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj111612_001.js` `939fbcb99165c0c26b19a9454c3775222d215c76d5aae6451ebd670f667870e0`	pdf-javascript-stream	PDF /JS object 111612 at offset 0x266	3313 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).

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