PDF malware analysis — malicious · 8c30d712ee5752ee

MALICIOUS

PDF

MD5: cc92db509d2ac6eaac94fa8faea068ae SHA-1: 3d3a959a10252b5805a46ca8a96ded727424e260 SHA-256: 8c30d712ee5752ee322aeded0bc9365e543a0168baa8b085ef634b93c7ce1ba7

136 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF file contains embedded JavaScript and a critical heuristic firing indicates an embedded Windows executable payload. The JavaScript, though truncated, is likely used to trigger the exploit and execute the embedded PE file. The presence of an embedded executable strongly suggests this PDF is a malicious dropper, likely delivered via spearphishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9972

Heuristics 6

Embedded Windows executable payload in PDF stream critical PDF_EMBEDDED_PE_PAYLOAD

PDF stream bytes contain an embedded Windows executable with a verified PE header. Exploit chains often hide droppers inside ordinary streams rather than standard /EmbeddedFile attachments.
Suspicious extracted artifact medium 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.
JavaScript action low 1 related finding 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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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://schemas.microsoft.com/SMI/2005/WindowsSettings In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`a`	pdf-embedded-file	PDF EmbeddedFile object 1 at offset 0x8F	1800704 bytes
SHA-256: `64fca7fd3f5aa30bbf9c9d4bf0ea01798b1c2203f3f42b1bb8d811e4ae4aac5c`
Detection ClamAV: No threats found Obfuscation or payload: likely actual_type=PE; declared_or_context_type=PDF; filename=a; kind=pdf-embedded-file Carved artifact entropy is 7.65, consistent with packed or encrypted content.
`javascript_obj0003_000.js`	pdf-javascript-stream	PDF /JS object 3 at offset 0x1A0449	85 bytes
SHA-256: `58ea8c5e9fd1ec585f80f70df9ff1aca0c1c3bd9403d4403ec135149ba76f146`
Preview script First 1,000 lines of the extracted script /var/www/cwg/src/cwg.web/bin/Release/net5.0/publish/wwwroot/lib/jquery/dist/jquery.js

Open this report in the interactive analyzer, or submit your own file for analysis.