Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e9437adb42acde…

MALICIOUS

PDF

2.7 KB First seen: 2026-05-10
MD5: 8298de5f12bde4fff08276a2aaa52ef5 SHA-1: 79ba03cde833b442c4538432b220b6677724417a SHA-256: f0e9437adb42acde081e0d412dd1ccee6979631740c464b39b79d51a5b3cb1bf
150 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file contains an embedded script payload and an embedded binary file, as indicated by the PDF_EMBEDDED_SCRIPT_PAYLOAD and PDF_EMBEDDED heuristics. The embedded file, named 'embedded_file_obj0002.bin', is a strong indicator of a potential secondary payload delivery. The XFA form suggests a more complex document structure that could be used to hide malicious content. The overall confidence is moderate due to the lack of specific script content to analyze.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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 script payload in PDF stream info 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 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/ In PDF document text
    • http://www.xfa.org/schema/xci/1.0/In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.4/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://ns.adobe.com/xtd/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0002.bin pdf-embedded-file PDF EmbeddedFile object 2 at offset 0x92 13412 bytes
SHA-256: 5f1429eacdf43a45aeb296a98b75413b7063999c340dd3e91b32e94938358934
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
xfa_image_rawvalue_000.tif pdf-xfa-image-tiff XFA image/rawValue TIFF payload near offset 0x5B5 8642 bytes
SHA-256: c7aeef41759b10f172052719a6efb1215f07eb56b2816947525f347b8b0a181b
Detection
ClamAV: Win.Exploit.CVE_2010_0188-7
Obfuscation or payload: likely
Static shellcode analysis found candidate code region(s). Indicators: NOP sled, SC_PEB_ACCESS, SC_STR_CMD Static shellcode analysis recovered command string(s): cmd.exe /c c:\a.pdf

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