Malicious PDF — malware analysis report

Static analysis result for SHA-256 6babf250d4673302…

MALICIOUS

PDF

73.1 KB
MD5: c7006d50998320586b929e216e33bd9c SHA-1: b36afac73d30aed6563fe10fc4bf287ebbef4b1b SHA-256: 6babf250d46733026d7c20e689aca7d0bcf3ed7e41a7d2e8b09d4a8f016ca203
156 Risk Score

Malware Insights

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

The sample is a PDF file that contains an XFA form and triggers the CVE-2010-0188 exploit, which is known to allow for arbitrary code execution. The embedded file and script payload further indicate malicious intent. The benign URLs present do not detract from the exploit's malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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
da32671dd89515b8890c087bad21aa7823c9bf7c8a9661800f65b074d6a50817		 pdf-embedded-file PDF EmbeddedFile object 8 at offset 0xC6 74087 bytes

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