Malicious PDF — malware analysis report

Static analysis result for SHA-256 c69e0e638046c5fb…

MALICIOUS

PDF

44.6 KB
MD5: c0522399c51f160b59139838ce96af47 SHA-1: b9e19410fd470b8441ff9b55d7535e4f248e9be2 SHA-256: c69e0e638046c5fbffbcdf4c046599070cce5a891ff4914d5a496941492f381d
114 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Dropper.Agent-1506697 and a machine learning classifier indicated a high probability of maliciousness. Embedded JavaScript streams were detected, suggesting the file's primary function is to execute malicious code. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, which is a common technique for dropper malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-1506697 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-1506697
  • 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
  • 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
5aeb3d010667ee622e0f972d26df315b2f5ee361c7ce5167f302a5327288f22a		 pdf-javascript-stream PDF /JS object 7 at offset 0x875 1062 bytes
font_00_sfnt_off000010f5.bin
044efaa0fcddad6a1afc97a6bd112675dff8d542f6a622fb73e7eb17d43d90f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5 65932 bytes

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