Malicious PDF — malware analysis report

Static analysis result for SHA-256 20bbbee5dd0c3b8f…

MALICIOUS

PDF

69.2 KB
MD5: d53a12eb723f1c10c9aef46344bd4c24 SHA-1: 0db91ea125bf58245b95f787826938a694c6058d SHA-256: 20bbbee5dd0c3b8f42b23c6ab17c9292d7c02b0eae1c7f59e4749ce821a2b924
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains an embedded script payload and triggers the CVE-2010-0188 exploit, indicating it is designed to execute malicious code upon opening. The XFA form structure suggests an attempt to leverage this exploit for arbitrary code execution, likely to download and run a secondary payload. While specific family attribution is not possible, the exploit and embedded script point to a malicious document delivery mechanism.

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
64ef5dd00261575455b9cb22ac18b4053e41c2573fbe249cbe7569213d2f19ad		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 70065 bytes

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