Malicious PDF — malware analysis report

Static analysis result for SHA-256 a010fdce9e3ac62c…

MALICIOUS

PDF

44.5 KB
MD5: 27eea8d0ecf2dc7217e76a7ec98de90f SHA-1: 6598948fad8890be8981cb47404e14e7873d4746 SHA-256: a010fdce9e3ac62c8be9881ad2d4476fb9b9c48a1dbae8d71708a4be3434ad04
118 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, which identified it as 'Pdf.Dropper.Agent-1507070'. The presence of embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics, suggests the document is designed to execute malicious code. This script likely downloads and executes a second-stage payload, a common dropper behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Dropper.Agent-1507070 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-1507070
  • 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.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://ns.adobe.com/xdp/
    • http://www.xfa.org/schema/xci/2.6/
    • http://www.xfa.org/schema/xfa-template/2.6/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
e0149a7a9751151da02407cdf4f7a05edb6b23a8ced21b6520f5d7ab7fbe17b2		 pdf-javascript-stream PDF /JS object 7 at offset 0x872 919 bytes
font_00_sfnt_off000010c3.bin
044efaa0fcddad6a1afc97a6bd112675dff8d542f6a622fb73e7eb17d43d90f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C3 65932 bytes

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