PDF malware analysis — malicious · 37fa514367d2d293

MALICIOUS

PDF

10.9 KB

MD5: 3f13763a921392f4165118c932a676b6 SHA-1: f6201560f3e66e0a0163e2240aafedd12c8f944a SHA-256: 37fa514367d2d293b24cce3f116f940abce17a54d1708b56044971f05d8c4c52

64 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript with an eval() call, indicating an attempt to execute arbitrary code. This is a common technique for downloading and running secondary payloads. The JavaScript stream was obfuscated using String.fromCharCode, but the presence of eval() is a strong indicator of malicious intent. No specific 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` `0df61a287fded6660240461ac3195a85b33c17b2d921c3c7f75b32db67bb64e6`	pdf-objstm-decoded	PDF /ObjStm 24 0 obj (inflated)	380 bytes

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