Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8632292052f989d…

MALICIOUS

PDF

15.4 KB
MD5: 429f4052a39ae9cef1cb4d24122843aa SHA-1: fa5ad82deae42030344757fab123885581e569a3 SHA-256: f8632292052f989dd63e5598e993274f70e411dd347ed6d34861654ce2c8422c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1566 Phishing T1204.002 Malicious File

The file is a PDF document that contains an embedded script payload, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic. ClamAV detection as Pdf.Exploit.Dropped-78 further confirms its malicious nature. The embedded script is likely responsible for downloading and executing a second-stage payload, exploiting a known PDF vulnerability. The presence of XFA forms and embedded files suggests a complex 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
65e9a8966a426e8e0681b32340b6e706dacf2d1d167c748c4da2cd506a3d9942
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 14967 bytes