PDF malware analysis — malicious · afbcab1f205fabf2

MALICIOUS

PDF

5.1 KB

MD5: 715165b284dca088b6bf20a68f969066 SHA-1: 4fb44afb464aaa2bcef1f14335468b397ba30417 SHA-256: afbcab1f205fabf28af18c74aca684de27fc6b02ceaaac9fb5b77c4a7a2ae5f2

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 execute code. This script is likely responsible for downloading and executing a second-stage payload. No specific family could be identified, and no URLs or network indicators were extracted.

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_obj69215_000.js` `fd38fb4ee709d876cb95bb093302dd1806e7090f4f9d0f54d002d8b5a6b689b3`	pdf-javascript-stream	PDF /JS object 69215 at offset 0x139	8347 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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