Malicious PDF — malware analysis report

Static analysis result for SHA-256 c31791a0f0d775a1…

MALICIOUS

PDF

78.5 KB
MD5: 54742fb8eadd0640a8f51d530da5c3ee SHA-1: c4a1a97e491c139b8e2aff615e812fde2f7f3508 SHA-256: c31791a0f0d775a10070f8d83c402fb9f5cac0ceb1fbef2c4763da84e1133a48
136 Risk Score

Malware Insights

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

This PDF file utilizes the CVE-2010-0188 exploit targeting Adobe Reader's LibTIFF component. The XFA form contains executable script, indicating an attempt to deliver a malicious payload. The embedded file and script heuristics strongly suggest this is a malicious document designed to exploit a known vulnerability.

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
e452a92433c1ad1c628a360a6be52ffaa53b14f3366742a19a2c55b0720f636d		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 79586 bytes

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