PDF malware analysis — malicious · d7811b4c1ee931eb

MALICIOUS

PDF

5.1 KB

MD5: 0571e5d2e7ac469d70edf36e6f199c72 SHA-1: 09678cf40a6c537b2a1f94352c0dd2ffe454e4e5 SHA-256: d7811b4c1ee931eb6a839ddd6ab860aedac4e0199b35bf26903ac0ac23462abd

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF document contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The PDF_EVAL and PDF_FROMCHARCODE firings suggest that the JavaScript is obfuscated and uses eval() to execute, a common technique for downloading and running additional payloads. The extracted artifact 'javascript_obj74836_000.js' is also flagged as suspicious due to script obfuscation. The lack of readable document body text means the primary indicators are the embedded script and associated heuristics.

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj74836_000.js` `3440188792136313d5c9a7bd0f9506e368635399da3cd600cada6340e5a5f2e4`	pdf-javascript-stream	PDF /JS object 74836 at offset 0x134	8353 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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