Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcbbdd01113d6804…

MALICIOUS

PDF

26.3 KB
MD5: 9625280aa749a589237e7f0cf52a7663 SHA-1: d769dcb91df398a973ed655ac585c1f2954b852f SHA-256: fcbbdd01113d6804a8834dae0c3753e652536ae8e0f0471c81978a464a2a0b60
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Exploit.Dropped-78, indicating it contains known exploit code. The presence of an embedded script payload and an embedded file further supports its malicious nature. While specific script content is not detailed, the embedded nature and exploit detection suggest it's designed to download and execute a second-stage payload.

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
a752170a2eb4bd06d16f289ba666ee2abd9a8973bcf6248afed4c7e7c6bd0278
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 26211 bytes