Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb7be71b106e791…

MALICIOUS

PDF

11.9 KB
MD5: 615f2dfe4880987935c23e248d6386d9 SHA-1: e2670acad922815974bc04cf631f3388f68ac005 SHA-256: 7fb7be71b106e791fe26d3cde89c615b944a61f3e4468de1a27ed6bccfcf9acb
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.002 Phishing: Spearphishing Attachment

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates malicious intent. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to deliver a secondary malicious payload. The embedded URLs, while not directly malicious in reputation, are part of the PDF's structure and may be used in the exploitation process.

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
016f3aca4f3c42e7ea13692a3da4bb0755284cdf1cfdcf72ed77406e1d7796df
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11420 bytes