Malicious PDF — malware analysis report

Static analysis result for SHA-256 483c6f011486d0ed…

MALICIOUS

PDF

4.1 KB First seen: 2013-06-07
MD5: 72ad44c6091f1f13273eb5bf2fd0f081 SHA-1: 45e55a8f9408b4cac8d51ae7bf9756166ddf5afc SHA-256: 483c6f011486d0ed2e0c801aa0827dcf048aff994f9ce00465b01080de13a38d
110 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter

The PDF file exhibits characteristics of containing malicious content, specifically an embedded script payload within a stream. The presence of PDF_EMBEDDED_SCRIPT_PAYLOAD heuristic firing strongly indicates that the document is intended to deliver and execute a script. While the script content itself is not directly provided, its embedding points to a delivery mechanism for further malicious activity. The XFA form and general embedded file heuristics further support the suspicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • 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/1.0\ In PDF document text
    • http://www.xfa.org/schema/xfa-template/2.5/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xEA 12670 bytes
SHA-256: eacf98a1b0e00e1b147530aeb93ecb7c57ab3e4c80051ec2da074b3024794a77

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