Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2082b1b47324e1e…

MALICIOUS

PDF

12.0 KB
MD5: 7d31193723b355d8c4ed1fb2936067b0 SHA-1: 408ed60b5f24ce94be12f215bfccfc5a462e4f3b SHA-256: d2082b1b47324e1e5c3ff1c3aa2455c7bbca5b80a3697e62bb1c9758fbf6696b
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' and the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic indicate this PDF contains an embedded script designed to exploit vulnerabilities. The presence of embedded files further supports the malicious intent. While the document body and scripts are heavily obfuscated, the overall structure points to a delivery mechanism for a secondary payload.

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
e36493845259359cf1f815fc24cff39ba1cc6e3a77b0914682fedc687ccc61fb
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11537 bytes