Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc4d81d8772d572…

MALICIOUS

PDF

19.2 KB
MD5: ff844ff1d99d12f88d7ad0bc7bf5548b SHA-1: 824dca1e31e58d84636126ec372c386c674c2e65 SHA-256: ccc4d81d8772d57274d81113dfff538a30bdd772ca7edcab9a0f919fc9389d48
96 Risk Score

Malware Insights

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

The PDF file contains embedded content and an embedded script payload, as indicated by the PDF_EMBEDDED and PDF_EMBEDDED_SCRIPT_PAYLOAD heuristics. ClamAV detection as 'Pdf.Exploit.Dropped-78' strongly suggests malicious intent. The embedded file and script are likely used to download and execute a second-stage payload. The embedded URLs are not directly indicative of malicious activity.

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
81022b311f36a642db38241d5e5127f5bbd2a685b9806f05721b99d904a78872
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18876 bytes