PDF malware analysis — malicious · 402e98236a232e0a

MALICIOUS

PDF

5.1 KB

MD5: ba4c3723b9460d50851a28a6d3924fb7 SHA-1: baff9d50bb4eb089eda694d6f31abaff67e9c28a SHA-256: 402e98236a232e0a6238016bb8f2c15d5492ed30b9ea573d4b7a33c658545ec0

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1059.007 JavaScript

The PDF file contains embedded JavaScript, which is obfuscated and uses eval() and String.fromCharCode. This indicates an attempt to hide malicious code execution. The heuristic firings suggest the JavaScript is designed to download and execute a secondary payload. The extracted artifact 'javascript_obj75619_000.js' is likely the obfuscated script.

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_obj75619_000.js` `cf0ca447ad443f1404ef64a1ea6c3bf9b1cc1bd8ccf019cfb2a99dc145054148`	pdf-javascript-stream	PDF /JS object 75619 at offset 0x134	8369 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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