Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a9a689f573dd067…

MALICIOUS

PDF

62.6 KB
MD5: d2223279eaedf16f7d72f274cc5396a0 SHA-1: db1f3a00ef123f5b6db2080578e124bf2340b31d SHA-256: 8a9a689f573dd067b0b3d60586af652a19837036c3384e642ca25007bf4554bf
136 Risk Score

Malware Insights

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

The PDF file exploits CVE-2010-0188 using an XFA form, which is a known method for delivering malicious content. The embedded script payload within the XFA form indicates an attempt to execute arbitrary code. While the specific family is not identifiable, the exploit and embedded script strongly suggest a malicious downloader or dropper.

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
cb18dde5112364311347efca8f875074df9429806df7692df095f8bb5273a557		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 63358 bytes

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