Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6a76113b3e4590a…

MALICIOUS

PDF

19.0 KB
MD5: 49915d8c345db7f6117df174604af346 SHA-1: 79651876d6a8d1dabdbdfe1d4ab2eeb3432cf9c4 SHA-256: a6a76113b3e4590a65516e2e081f987cb4017b27e75946ffce219c817b8f05b3
96 Risk Score

Malware Insights

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

The critical ClamAV detection of 'Pdf.Exploit.Dropped-78' strongly indicates malicious intent. The PDF contains an embedded script payload and an embedded file, common techniques for delivering exploits and secondary payloads. While specific URLs were found, they were either benign or of unknown reputation, and no document body text was available to infer a specific lure.

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
cf68f877ef070d8889786e8dc8ba4478e4d71a99b1a07484dfd6b39515702764
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC8 18743 bytes