Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d3a073bec60aba…

MALICIOUS

PDF

99.5 KB
MD5: 373001834ad7fbbaa3c78a248eda42e0 SHA-1: 58ef74518fb37a511da81c16d10350b5fb238cfc SHA-256: a1d3a073bec60aba24d4c1cff4c4c0fe15eae595c9f23210e901849cfef3e19d
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF component. The PDF contains an XFA form with an embedded script payload, indicating an attempt to execute arbitrary code upon opening. The embedded script likely downloads and executes a second-stage payload, though the exact nature of the payload is not discernible from the provided evidence. The presence of the CVE-2010-0188 exploit and embedded script points to a malicious document designed for initial compromise.

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
21bd0574e667f5b1849f7711792cc1b6f9cfc847caa63c396d243e29dd95f39b		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101107 bytes

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