Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d51f3dd1e2d38d…

MALICIOUS

PDF

19.2 KB
MD5: 547281c40b921db0eba81c7555e40c63 SHA-1: 1099f20f48c018fc4d4cdf35c5278c81b14eb4a7 SHA-256: d3d51f3dd1e2d38dc70a24bdbd3635a2f4e5f603c554ca5d07b116019e8c2905
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File

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 this. While no specific URLs were flagged as malicious, the embedded nature of the exploit and payload suggests a delivery mechanism aimed at tricking the user into opening a malicious file.

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
cbaec3190f59b56492b8c1fa40a77adff98ef3d0bd835185b2aa8107cf8ec4d9
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18947 bytes