Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd7094dcb3673772…

MALICIOUS

PDF

12.2 KB
MD5: ce617c8b2dc2c4b58798dd10ebd1240a SHA-1: afdd071b3708e0d65a0231a8e45937742798ac14 SHA-256: dd7094dcb36737723dca092f494855c5946b0e9cda7ac7440b02294eebada310
226 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious File T1204.002 Malicious File: User Execution: Malicious Attachment T1059 Command and Scripting Interpreter

The PDF file contains critical XFA heap spray exploit code and embedded script payloads, strongly indicating malicious intent. ClamAV also detected it as Pdf.Exploit.Dropped-78. The embedded script likely downloads and executes a second-stage payload, contributing to the overall malicious functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • XFA JavaScript heap-spray exploit code critical PDF_XFA_HEAP_SPRAY
    PDF contains XFA script content with heap-spray or shellcode-like JavaScript markers such as large encoded word sequences, util.pack, large arrays, or spray variable names. This is a weaponised Adobe Reader exploit pattern, not a normal interactive form.
  • ClamAV: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD
    PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
  • Embedded file low PDF_EMBEDDED
    PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
  • 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/xfa-template/2.5/
    • http://www.xfa.org/schema/xfa-data/1.0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin
3ecd8699ce1ead3f01e3a3b3108a4c42db24c1d57d44711cdb5708f020c04c8b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11777 bytes

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