Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a39dd7167d09078…

MALICIOUS

PDF

100.0 KB
MD5: 8ed990045add21b7f20d17dbf54e49ca SHA-1: b6846d052bc7b8a6181015372a22ad9a616e7430 SHA-256: 0a39dd7167d090786cb5e37190066adbd0b3473acf67f287322ec1d3e2d5ad4a
116 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF sample contains embedded XFA forms and triggers the CVE-2010-0188 exploit, indicating it is designed to achieve arbitrary code execution. The ML classifier strongly supports a malicious verdict. While no specific malware family is identifiable, the exploit's nature suggests it's used to download and execute a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 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 script payload in PDF stream low 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 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
734b71055d73f00b18a049b01e753880627ef18b9b1d9b681413aade4a75a80a		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101624 bytes

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