PDF malware analysis — malicious · 47a6e2e5915d2194

MALICIOUS

PDF

4.0 KB

MD5: 558852c21a26f90bac2e4467eec5268f SHA-1: 09c8daba1bee014c4af647555c4c3f1a380e72bf SHA-256: 47a6e2e5915d2194e95e3a3244c7472bdbba5d5fbabd69af966184a379c423b2

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 heavily obfuscated, as evidenced by the PDF_EVAL and PDF_FROMCHARCODE firings, and the 'Script obfuscation indicators' in the static triage. This obfuscated script is designed to download and execute a second-stage payload. The specific nature of the payload cannot be determined from the provided evidence, but the techniques used are consistent with common PDF-based malware delivery.

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_obj0005_000.js` `85253359c1bf712d287ecc9da5ef05092696a37853037dc93bb98e3046e62c8a`	pdf-javascript-stream	PDF /JS object 5 at offset 0x107	11937 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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