Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd87f7bdd43557f5…

MALICIOUS

PDF

11.6 KB
MD5: 818590363a8241181261fdeb98e7113e SHA-1: c8a27f1a4bc7538851a7e238afc42dfc45ea2ee2 SHA-256: dd87f7bdd43557f553ae563a3aec6d3dc6c6a1e1d51fb99c1ebee6d6a8902cd4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. ClamAV detection confirms this as Pdf.Exploit.Dropped-78. The embedded file and XFA form suggest a potential exploit delivery mechanism. The document body is obfuscated and does not provide clear user-facing content, but the presence of an embedded script payload points to a malicious intent to execute further stages.

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
9643c23fd09b4a76e14e4f365363aea8e24ab1a8dc44c2044f066ae7715a0f68
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11148 bytes