Malicious PDF — malware analysis report

Static analysis result for SHA-256 8440aa339c3f4891…

MALICIOUS

PDF

12.1 KB
MD5: 493f89361cfbe8471a0be313867d35dc SHA-1: 8b029852f229a5ce582f34bf2466f885bbb1fbd5 SHA-256: 8440aa339c3f48918cd3b3f4c565734ae1b8ee614c2de3fb728814f0f839a1dd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates malicious intent. The PDF contains an embedded script payload, suggesting it's designed to exploit vulnerabilities and download further malicious content. The presence of embedded files and XFA forms are common characteristics of malicious PDFs.

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
1caf0a7b7a1dfb80210cb1c6f6e6f25fe0fd81876b752ad25109c75d64a94a78
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11672 bytes