Malicious PDF — malware analysis report

Static analysis result for SHA-256 876e83924c7ddea4…

MALICIOUS

PDF

12.1 KB
MD5: 88205f0559f71b4276f951efb6f240ef SHA-1: fd9049db419cac0517b2e5589cc610870f4ee387 SHA-256: 876e83924c7ddea4b14d2b222af4a36e80df1da1a3136e57947d21843eb90ef1
96 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as Pdf.Exploit.Dropped-78, indicating it contains an exploit. Heuristics also identified an embedded script payload and an embedded file, suggesting the PDF is designed to download and execute a second-stage payload. The embedded URLs are benign or unknown, providing no direct IOCs.

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
9a150c7edbf1795866790f2ac73d461df05bc1ebdd737a687930b9932d12c181
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11666 bytes