Malicious PDF — malware analysis report

Static analysis result for SHA-256 3895fdbe90499a8c…

MALICIOUS

PDF

19.2 KB
MD5: 90023006a2301ebba734e7c54185702f SHA-1: 454a94a15436923bf8eb9bcfd25fb329fd7cba16 SHA-256: 3895fdbe90499a8c8ea080f0c1cb81853f6569091a34edfd970db17977d072d1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF document contains embedded content and is flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it's designed to exploit vulnerabilities. The presence of embedded scripts and the XFA form structure further suggest a malicious intent to deliver a payload. The embedded URLs, while not directly malicious, are part of the document's structure.

Heuristics 5

  • 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
1b4be33281de1b8012b4c0d3ff1f6552effcce2aedb2c769acdd45f5a1ea3fb9
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18869 bytes