Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d5d80c1bb609361…

MALICIOUS

PDF

99.8 KB
MD5: f64f5d5246ef375d8178365a02e1e5b3 SHA-1: df0e33de840dc4da1675804e77c3d630b525505a SHA-256: 9d5d80c1bb609361d217208e74f7139a356d1a61a5c2bf45d17f1edd698090cc
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution: Malicious File T1566.001 Phishing: Spearphishing Attachment T1204 User Execution

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms and LibTIFF. The heuristic firings indicate the presence of an embedded script payload within an XFA form, which is characteristic of exploit documents designed to deliver a secondary payload. The embedded URLs, while mostly benign or unknown, are part of the document's structure and do not directly indicate the payload's destination.

Heuristics 6

  • 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.
  • XFA form contains executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose dataset contains a <script> or <xfa:script> block — XFA scripting has been the exploit primitive for several Adobe Reader RCEs (CVE-2010-0188 family, CVE-2018-4901, and others). Plain XFA without scripts is far less risky.
  • 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
50f7cd4da70e5fd7d05f0d9336801fd023e57a56c1e11c4f7d2aa1dbbc4a82ce		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101408 bytes

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