Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b187f6e2a7d8564…

MALICIOUS

PDF

99.5 KB
MD5: af396129aeb1aec76c2b10819cbef441 SHA-1: 20ac5f76e1f27b9f718db27c0ae2d7065141783a SHA-256: 6b187f6e2a7d85643188b538eac211096cd2df4c6a9451c5b4610d92f7d6af29
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

This PDF file contains an embedded exploit targeting CVE-2010-0188 in Adobe Reader's LibTIFF component. The XFA form structure and embedded script payload indicate the document is designed to trigger this vulnerability upon opening, leading to arbitrary code execution. The embedded file and ML classifier further support its malicious nature.

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 low 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/
    • 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
238a92e6821656d2fb2ec54337364f91950464e92a77c123366f832ceac63aed		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101179 bytes

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