Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a7e8e20e3d3e156…

MALICIOUS

PDF

19.5 KB
MD5: 7d087a8657d5e5e62eb848466fa001a6 SHA-1: 7903ca806deb7483c10baef824f966f561424c33 SHA-256: 9a7e8e20e3d3e156a2fc45dde50908c384610df88cb93ba5d14d3f8d159e9100
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates this PDF contains an exploit. The 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic confirms the presence of an embedded script, which is a common method for delivering secondary payloads. While the document body and embedded URLs do not provide direct malicious indicators, the overall structure and heuristic firings point to a malicious 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
2b52dc084fbf4b6a2fa38922c79beaa07d32c7e1b23e8d5afa4be6b8115c8bd0
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 19202 bytes