Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1f864b32a3e69d3…

MALICIOUS

PDF

123.4 KB
MD5: 8e09ec41943da985026397943c0e6746 SHA-1: f5bcb1e42af2e08d159488dcf78875187a7f2bc1 SHA-256: d1f864b32a3e69d33a0f235312e08d81e6e52f7990ec9f6ffb159e9d0db94800
88 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains an embedded script payload, 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, as is common with this type of exploit. The presence of an XFA form also suggests a potential vector for exploit execution.

Heuristics 4

  • 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.
  • 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://www.xfa.org/schema/xfa-template/2.5/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_pdf_script_00000329.bin
8e7fb822fcdeb679c4deb4777a76a0b424bdef676254c934ec0286d4b565332d		 pdf-embedded-script PDF raw stream script payload at offset 0x329 125618 bytes

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