PDF static analysis report

Static analysis result for SHA-256 873d16a2e45d6832…

SUSPICIOUS

PDF

32.4 KB Created: 2011-04-12 19:13:42 -04:00 Authoring application: Writer (via OpenOffice.org 2.4) First seen: 2013-08-16
MD5: a4e236473b36c48e28661764f1c6d515 SHA-1: a031d93a45b5f40bdc5fc339b5968c65feaa8ba0 SHA-256: 873d16a2e45d6832f8821647add36a2e177a61320f7444895fed2aab37df1d8a
56 Risk Score

Malware Insights

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

The PDF contains embedded files and XFA forms, which are common vectors for exploiting client-side vulnerabilities. The ML classifier strongly indicates malicious intent. While no specific script was extracted, the presence of embedded files and the XFA structure suggests an attempt to execute arbitrary code, likely to download a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 4

  • 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
  • AcroForm button with action trigger low PDF_ACROFORM_BUTTON
    PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
  • 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://www.monotype.comhttp://www.monotype.com/html/type/license.html In PDF document text
    • http://ns.adobe.com/xdp/In PDF document text
    • http://www.xfa.org/schema/xci/1.0/In PDF document text
    • http://ns.adobe.com/xtd/In PDF document text
    • http://www.xfa.org/schema/xfa-data/1.0/In PDF document text
    • http://ns.adobe.com/xfdf/In PDF document text
    • http://www.xfa.org/schema/xfa-form/2.8/In PDF document text
    • http://www.monotype.com/html/mtname/ms_timesnewroman.htmlhttp://www.monotype.com/html/mtname/ms_welcome.htmlNOTIFICATIONIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 8

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0020.bin pdf-embedded-file PDF EmbeddedFile object 20 at offset 0x4685 28457 bytes
SHA-256: e267eb7555a04fa068bcbfa4639fd116b6bdd72b053a04b5099affc2a900122b
embedded_file_obj0018.bin pdf-embedded-file PDF EmbeddedFile object 18 at offset 0x7A2E 84 bytes
SHA-256: d81baa73e490e4cb879e13927cacd1dd1be37524a37eac51603e15117c578777
embedded_file_obj0019.bin pdf-embedded-file PDF EmbeddedFile object 19 at offset 0x7AE0 228 bytes
SHA-256: 24c130f03a4cf51d470b536e94c1e58af67665739e200e0ce198ad41086243c0
embedded_file_obj0021.bin pdf-embedded-file PDF EmbeddedFile object 21 at offset 0x7BD1 199 bytes
SHA-256: c97e0522381d6196cc0695f35f4d065f15c9c86a9601a7f776c6afd3f4c6b460
embedded_file_obj0022.bin pdf-embedded-file PDF EmbeddedFile object 22 at offset 0x7CC2 119 bytes
SHA-256: 846dfecc0c93797cb6db4301f6af323fffd76ffdf8c053c439495412785138e7
embedded_file_obj0023.bin pdf-embedded-file PDF EmbeddedFile object 23 at offset 0x7D7A 77 bytes
SHA-256: e6c26a3478346d27e841ad49868ebf68bf4c6863b6750e8d60bda3c4c6f79876
embedded_file_obj0024.bin pdf-embedded-file PDF EmbeddedFile object 24 at offset 0x7E21 56 bytes
SHA-256: 92a3ce61d783e15932b5de127ce45a9b4c2f98f4da2453f65241573c1dda808a
font_00_sfnt_off0000015e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E 29260 bytes
SHA-256: 1cd05ecb4b9aba07818c7e1c5fa3727186fe5bbc2ff16ab8e3ba3bb84ecef56a

Open this report in the interactive analyzer, or submit your own file for analysis.