Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a2f1f023643de41…

MALICIOUS

PDF

99.5 KB
MD5: b21dccb42e0a18551fb32d41d5e97f29 SHA-1: 6005d6bce5c1906435dd7191a9dedc52381bf534 SHA-256: 6a2f1f023643de411218fbd49b57826ab84d2ca496ff60b139bb2217ba4e797c
116 Risk Score

Malware Insights

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

The PDF file contains an exploit for CVE-2010-0188, targeting Adobe Reader's LibTIFF component. This vulnerability allows for arbitrary code execution when the document is opened. The presence of an embedded file and script payload further indicates malicious intent, likely 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
1b262cbcbc024649d86490bc3c862138c1aef578a6d908035e83b4627bfba6da
pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 101089 bytes