Malicious PDF — malware analysis report

Static analysis result for SHA-256 a87481b09c6ebc39…

MALICIOUS

PDF

11.7 KB
MD5: 5f69aba55621c8bac81a2af8e203c9de SHA-1: ff6fce48b45f9713398017bf8676427172d6688a SHA-256: a87481b09c6ebc39a80e795e4cb63d02323c961d9f825ac915ad895cec9f436f
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. The presence of an embedded script payload and an embedded file further supports its malicious nature. The exact exploit mechanism and payload are not detailed in the provided evidence, but the file's purpose is to deliver a malicious 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
a188bd46a777bd5bf973d535d50270fdf6dde7cc202cc98ed12f2a5b60d83602
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11199 bytes