PDF malware analysis — malicious · 548076c16a2c85ae

MALICIOUS

PDF

6.4 KB

MD5: c913d56b3aade7ddf04044a55e32c51d SHA-1: e10f86912bf7973861a92836b87b9292b05358a3 SHA-256: 548076c16a2c85ae77fce73104a2cd07689e0e0cbd346d197ea814633c00ec9d

64 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 presence of a PDF_EVAL heuristic firing suggests that the JavaScript is likely being used to execute arbitrary code, potentially downloading and running a second-stage payload. The PDF_FROMCHARCODE heuristic further supports the use of JavaScript for code execution. No specific malware family could be identified.

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. (matched inside decoded stream)
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. (matched inside decoded stream)
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)
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objstm_0024_00.bin` `c2e86b6d11b4d18b5258876d4d9ffe6694f30f0263867d3d18119552d1298cd7`	pdf-objstm-decoded	PDF /ObjStm 24 0 obj (inflated)	385 bytes

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