Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5ec9e2bec74455…

MALICIOUS

PDF

12.0 KB
MD5: 9501d642853c725501e8bab2978cbecb SHA-1: 26c9e4391e4efc8d4d3ddf85184de32c55c058db SHA-256: 8c5ec9e2bec74455ec0f75d744fcb480368331ac478cfcc7c46444a1b9539400
96 Risk Score

Malware Insights

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

The critical ClamAV detection 'Pdf.Exploit.Dropped-78' strongly indicates this PDF is malicious. The presence of an embedded script payload and an embedded file further supports this, suggesting the PDF is designed to exploit a vulnerability and drop a secondary payload. The embedded URLs are benign or unknown, and the document body content is not indicative of a specific lure.

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
d0022598b6e3b0d119624d9419b6ba705ba363cb27f696659ca17d48529c3d46
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11570 bytes