Malicious PDF — malware analysis report

Static analysis result for SHA-256 988bfad64a438eca…

MALICIOUS

PDF

63.3 KB
MD5: 0eb1147d5b0563b8689181a32eff7085 SHA-1: a8e71819875bf653eb4b3524c27c403c385a27d1 SHA-256: 988bfad64a438eca71ebce83e9a4acaad8d5f9b0966002cc3968ca4432c2627b
136 Risk Score

Malware Insights

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

The PDF file contains embedded content and triggers multiple heuristics related to XFA forms and embedded script payloads. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of a known vulnerability in Adobe Reader related to LibTIFF XFA images. The presence of an embedded script payload within an XFA form suggests an attempt to execute malicious code upon opening the document. While no specific URLs or further script details were extracted, the primary attack vector appears to be exploiting this CVE to deliver a secondary payload.

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
8593b41ba03fe00c2c9015d243b1983b173e1c7eeff50c4247a33121772336a7		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 64112 bytes

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