Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee477d11d06cb48c…

MALICIOUS

PDF

26.3 KB
MD5: 8d911a4fcd38b3a76b8640e936265621 SHA-1: ccbaa93444326ff6d27543e57d847a73aeec4b97 SHA-256: ee477d11d06cb48cfba10b4521fbdfc035e2a7f01a5ca6117b01f1012786bcda
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 file likely attempts to exploit a vulnerability to download and execute a second-stage payload, although the specific exploit and payload are not detailed in the provided evidence.

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
63e1ce26a807f5b117070ca3bda99d6231dafd9b2100c8e4192e309fcff09453
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 26190 bytes