Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3a9f5c7215711db…

MALICIOUS

PDF

12.0 KB
MD5: 79789d7ae623b8989f676c049e0fb4fd SHA-1: 2da0adea48efa6599fd3886f9ac32c501baf704a SHA-256: b3a9f5c7215711dbd619dd4ac5e4ef195c6e322f30f911ff2332b18d567354e2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

The PDF file contains embedded script payloads and is flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it is designed to exploit vulnerabilities. The presence of embedded files and XFA forms further supports its malicious nature. The embedded URLs, while mostly benign or unknown, are part of the document's structure that facilitates the exploit.

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
bc19e17960e40f217adce515601276a3ddf3cf53a597e89463f6b8319eff55a6
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11503 bytes