Malicious PDF — malware analysis report

Static analysis result for SHA-256 d744532fe6f79631…

MALICIOUS

PDF

44.5 KB
MD5: e2322875c0152dc3f51c0a099e95cb7f SHA-1: db4463386091748e1379d98e558aa09d63d75655 SHA-256: d744532fe6f79631f8b2be101dc244e2ca11b45f820690163707862574305006
118 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically identified as 'Pdf.Dropper.Agent-1506748'. It contains embedded JavaScript, which is a common technique for executing malicious code within PDF documents. The presence of JavaScript actions and embedded JS streams strongly suggests that the script is intended to download and execute a second-stage payload. The document body is heavily obfuscated and unreadable, providing no direct clues about the lure, but the technical indicators point to a dropper functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Dropper.Agent-1506748 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-1506748
  • 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
0391cfcfe16e1295cf228f6895b2be671a3884ba7e91f4746ba87e23d059d7ba		 pdf-javascript-stream PDF /JS object 7 at offset 0x86B 933 bytes
font_00_sfnt_off000010cb.bin
044efaa0fcddad6a1afc97a6bd112675dff8d542f6a622fb73e7eb17d43d90f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB 65932 bytes

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