Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2a718b0e3264a7…

MALICIOUS

PDF

82.5 KB
MD5: 3f707789245006b33afa9264bd25427c SHA-1: e1261b9e5db8a60c1e62b2006f5e82e233f8cf87 SHA-256: 8d2a718b0e3264a7b8552506cea2ccaf478379222a2b4375c88707bd8c19afc8
136 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1566.001 Spearphishing Attachment T1204 User Execution

This PDF document exploits the CVE-2010-0188 vulnerability in Adobe Reader's handling of XFA forms and LibTIFF images. The embedded script payload within the XFA form is designed to trigger this exploit, likely leading to the download and execution of a second-stage payload. The presence of an embedded file further suggests a multi-stage attack.

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
89453f28c7211ccf2cf072037a31ab3474dba7847e12718c92d7756e03b35610		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 83773 bytes

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