Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1a732aeeca92e8f…

MALICIOUS

PDF

19.2 KB
MD5: fec84626ce988b5b5c0638d556f45404 SHA-1: be2637817b47e6e8eeded52351e5ef2e457e179e SHA-256: c1a732aeeca92e8ff88b18172898cd5e492d150f9b08e93894cabaed27e4aa0d
96 Risk Score

Malware Insights

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

The PDF file contains embedded script payloads and is detected by ClamAV as Pdf.Exploit.Dropped-78, indicating it is designed to exploit vulnerabilities. The presence of XFA forms and embedded files further supports its malicious nature. The embedded URLs are not directly indicative of malicious activity but are part of the PDF structure.

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
f93712d9673716722e55ab1416454847c093439397338ee4a31b3bd240ac009b
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18950 bytes