Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7abf5d3787d6ad…

MALICIOUS

PDF

99.6 KB
MD5: ba6929664c13ed78ce8b6003d9610bd6 SHA-1: 5ae6a96415924e82d3af277de8656b70b7f5faa5 SHA-256: 3a7abf5d3787d6ad0ff2ee906d1449fb8e67bc2fc5a981bf94e61389de969f80
96 Risk Score

Malware Insights

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

The sample is a PDF document that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. This exploit allows for arbitrary code execution, likely to download and run a second-stage payload. The embedded file and script payload further indicate malicious intent. The URLs found are related to XFA schemas but do not directly point to malicious infrastructure.

Heuristics 5

  • 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.
  • 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
da577cf40dfe027eb0f41f36ef547a0c88dffdae7ae3c2ee2727d8b644ad60b6
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101259 bytes