PDF malware analysis — malicious · a02bd0ee704db721

MALICIOUS

PDF

4.3 KB

MD5: 065ee3a192c93ac34908ebf22ed36897 SHA-1: 59286804e5744f246d5b8a8c77ad66b9490d027f SHA-256: a02bd0ee704db721bbe7204284e3d7359f78daee6412865fc231b3c180ecb7e2

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file 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() and String.fromCharCode to dynamically construct and execute code. The extracted artifact 'javascript_obj496325_000.js' is likely the source of this obfuscated script. The primary intent appears to be downloading and executing a second-stage payload, which is a common technique for malware delivery. Due to the obfuscation, the exact download URL or execution method could not be definitively determined from static analysis alone.

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_obj496325_000.js` `5a135473ecea9b3708f6bb228cc1837f77c590acf89fc04a872b7ab6e9b8c1c7`	pdf-javascript-stream	PDF /JS object 496325 at offset 0x135	8308 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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