Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c45e5d92bb56f3…

MALICIOUS

PDF

99.9 KB
MD5: 9399c9f60429d055673ec45f47097060 SHA-1: 6fe334610f968008f95fa84bd70e742d66c9c9f1 SHA-256: 70c45e5d92bb56f333527e06040cbf6b72889ce78d47b79fbd68ce25016670ca
116 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by an ML classifier and contains heuristics indicating the use of CVE-2010-0188, an exploit targeting Adobe Reader's XFA forms. This exploit is designed to execute arbitrary code, likely as part of a spearphishing attachment campaign. No specific malware family was identified.

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
97814bb68be224004ea6ef97336fb13b9ed59841c5153a986d8d544d2af96927
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101525 bytes