Malicious PDF — malware analysis report

Static analysis result for SHA-256 012278c2acab98b4…

MALICIOUS

PDF

13.3 KB
MD5: 84014cf80dea62ca61fe0058f46ab2a9 SHA-1: d5d15c1ea7751f01c8f0d764078df6def12c3022 SHA-256: 012278c2acab98b4e0ea227fcd1b5e3250b37550e98e9a6990d4aa74101c9323
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1059 Command and Scripting Interpreter

The PDF file exhibits multiple indicators of maliciousness, including an embedded script payload and a high score from an ML classifier. The presence of embedded files and XFA forms further suggests a complex attack vector. The embedded URLs, while some are confirmed benign, are part of the document's structure and could be used for further exploitation or command and control.

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/xci/
    • 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
4e708216e6116aba4b7890d631a79485048d4f9fde702f29c59e1a33f570badd
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xD5 12827 bytes