PDF malware analysis — malicious · 9a56e48402788088

MALICIOUS

PDF

11.0 KB Authoring application: Our planet in picked their youll fingered them.

MD5: 8a88429d6dc1d5382242bcc285173eb8 SHA-1: 5aaf343c7c09fa03f81c074584654f838188e4bd SHA-256: 9a56e48402788088cbde178129bb8a68244b6734b7a0719a9232da9d47fb5682

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 JavaScript stream is obfuscated using unescape() and String.fromCharCode, suggesting malicious intent. The primary function of the script appears to be downloading and executing a second-stage payload, as evidenced by the obfuscated nature and the extracted artifact name 'javascript_obj0018_000.js'. The document body text is largely unreadable and appears to be corrupted or heavily encoded, providing no clear user-facing lure.

Heuristics 5

unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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_obj0018_000.js` `46a5c123c83cc865444378adac7465b4ec4bc9b3f147ea9a5f1945caa1f9cf84`	pdf-javascript-stream	PDF /JS object 18 at offset 0x4BA	163338 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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