Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f24c805c97c676…

MALICIOUS

PDF

12.0 KB
MD5: 8ad11eccdf4c66cc5cc391bb3ac25a33 SHA-1: d4caa238fe59b94c69d33e26b2054e8c382ebea3 SHA-256: c8f24c805c97c67679828fbca130978a9508c6bc5864a36c4c2ae7aa669dccc6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious Attachment 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 a dropper for further malicious activity. While no specific URLs were flagged as malicious, the overall structure and heuristic firings point to a common PDF exploit delivery mechanism.

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
af9092aead596fdde5f3221e708bbced150580981bba800102aa6825ffc4ca2d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11535 bytes