Malicious PDF — malware analysis report

Static analysis result for SHA-256 8085dd8a5ee246ae…

MALICIOUS

PDF

35.7 KB
MD5: f55ad4c9dce038a9851b9465f8cbbb78 SHA-1: e3587f00e41bae37e5174b214ae837720fa1d043 SHA-256: 8085dd8a5ee246ae716d10dea996dcbb63872e454b25951dcdb082afce8e522a
66 Risk Score

Malware Insights

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

The PDF file contains embedded content and an embedded script payload, strongly indicating a malicious intent. The ML classifier output of 0.999991 further supports this. While the document body is heavily obfuscated and unreadable, the presence of embedded artifacts and script markers points towards an attempt to deliver a secondary payload or exploit a vulnerability. The embedded URLs are not directly actionable for exploitation but are part of the document's structure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
8428b3012e2f879613769a0ca85f8efd121f9bd41b752c133a9af72975fb3b6d
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 35785 bytes