Malicious PDF — malware analysis report

Static analysis result for SHA-256 2deb286e9befd525…

MALICIOUS

PDF

11.8 KB
MD5: 84ae44d0119f7a37bcd81cd2f8d628ba SHA-1: 2464555c4bbedb86235216247cbeceebbb703aa8 SHA-256: 2deb286e9befd5253e6556c1e4d276bd50987a095ae30fb4ac43fad7e71be81e
96 Risk Score

Malware Insights

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

The PDF document contains an embedded script payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic. ClamAV detection 'Pdf.Exploit.Dropped-78' further confirms its malicious nature. The embedded file and XFA form suggest a potential exploit delivery mechanism. The primary attack pattern involves exploiting a PDF vulnerability to execute 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
fe593b7007c1300c104ed4e000463be9f5fa2a2c58d5aabcc4a062e5bf3c7d1e
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 11335 bytes