Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb404e7a8bc220f…

MALICIOUS

PDF

19.7 KB
MD5: 588234241fb4fb026fb7e18cbe95331b SHA-1: 840d0878bddfd93f9bd1d9783432ca5918654065 SHA-256: 7bb404e7a8bc220f196dbc53767458d8653e084ed0f28b412e72ea06ba41489d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it contains an exploit and likely drops a secondary payload. The presence of an embedded script payload and an embedded file further supports this, suggesting the document is designed to execute malicious code upon opening. The embedded URLs are benign or unknown, providing no direct IOCs.

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
c47f46acc62ead4a2ab3e487355e08e98f45d0e5095e4c7f0ec4c2b698bdfc36
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 19416 bytes