Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3cfee9ceacb811…

MALICIOUS

PDF

398.8 KB Created: 2009-10-08 13:59:47 -05:00 Authoring application: Adobe LiveCycle Designer 8.0 First seen: 2026-05-10
MD5: 8840c1ffc7c40e2c23f22bbb1edd0db3 SHA-1: ea883ebaa63c274ceb70bd0606eadfc189b5ce94 SHA-256: cc3cfee9ceacb81152ca50c06e734368b51127aa15b08f8790950fff17167672
76 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and an embedded script payload, indicating an attempt to execute malicious code. The presence of XFA forms and JavaScript actions suggests a common delivery mechanism for exploiting PDF vulnerabilities. The embedded file 'embedded_file_obj0009.bin' is likely the secondary payload. No specific family could be identified.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9714

Heuristics 8

  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 script payload in PDF stream info 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.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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://ocsp.verisign.com0 Referenced by PDF JavaScript
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/g/img/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#In PDF document text
    • http://ns.adobe.com/illustrator/1.0/In PDF document text
    • http://www.iec.chIn PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://cgi.adobe.com/special/acrobat/updateReferenced by PDF JavaScript
    • http://crl.verisign.com/ThawteTimestampingCA.crl0Referenced by PDF JavaScript
    • http://crl.verisign.com/tss-ca.crl0Referenced by PDF JavaScript
    • https://www.verisign.com/rpaReferenced by PDF JavaScript
    • https://www.verisign.com/rpa01Referenced by PDF JavaScript
    • http://crl.verisign.com/pca3.crl0Referenced by PDF JavaScript
    • http://CSC3-2004-crl.verisign.com/CSC3-2004.crl0DReferenced by PDF JavaScript
    • https://www.verisign.com/rpa0Referenced by PDF JavaScript
    • http://CSC3-2004-aia.verisign.com/CSC3-2004-aia.cer0Referenced by PDF JavaScript
    • http://www.adobe.com/typehttp://www.adobe.com/type/legal.htmlReferenced by PDF JavaScript
    • http://ns.adobe.com/xdp/Referenced by PDF JavaScript
    • http://www.xfa.org/schema/xci/1.0/Referenced by PDF JavaScript
    • http://www.xfa.org/schema/xfa-template/2.5/Referenced by PDF JavaScript
    • http://www.w3.org/1999/xhtmlReferenced by PDF JavaScript
    • http://www.xfa.org/schema/xfa-data/1.0/Referenced by PDF JavaScript
    • http://www.xfa.org/schema/xfa-locale-set/2.1/Referenced by PDF JavaScript
    • http://ns.adobe.com/xtd/In PDF document text
    • http://ns.adobe.com/xfdf/In PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 14

Files carved from inside the sample during analysis.

FilenameKindSourceSize
embedded_file_obj0007.bin pdf-embedded-file PDF EmbeddedFile object 7 at offset 0x5E309 85 bytes
SHA-256: c06dcd026a7ea0536b63e07ce688691b585339a3ab7ff59065e546b56308c7bb
embedded_file_obj0008.bin pdf-embedded-file PDF EmbeddedFile object 8 at offset 0x5E3BC 3359 bytes
SHA-256: ebd19ee31a1f1d52f534ae8b59ae6612d5c4263e3987d20618a9f9517e9ae2ed
embedded_file_obj0009.bin pdf-embedded-file PDF EmbeddedFile object 9 at offset 0x5E8AE 102235 bytes
SHA-256: a6b53f8633ee29b7f9a3eee5861205f06b13e48f05bd54a6b4ae7ec4b925cac0
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 2 long base64-like blob(s).
embedded_file_obj0010.bin pdf-embedded-file PDF EmbeddedFile object 10 at offset 0x60353 1979 bytes
SHA-256: 196ead3e7ba651f4a1783d1958c67cf904627cee976d71531342ddfece0e76dd
embedded_file_obj0011.bin pdf-embedded-file PDF EmbeddedFile object 11 at offset 0x6047D 4748 bytes
SHA-256: f885f582096c48270101c764dd3d3f994844f02f6ae90631b5a255c4a9e3731f
embedded_file_obj0012.bin pdf-embedded-file PDF EmbeddedFile object 12 at offset 0x6079B 214 bytes
SHA-256: 7e915b5dd2e321929666a7b64c038b67678092d6e43a4a70683521856a4d5128
embedded_file_obj0013.bin pdf-embedded-file PDF EmbeddedFile object 13 at offset 0x60896 799 bytes
SHA-256: c94bbe951194333d6c39782ddf73e968a1a1741cd5455bd47dd6b6da85bb6a60
embedded_file_obj0014.bin pdf-embedded-file PDF EmbeddedFile object 14 at offset 0x60AA6 110 bytes
SHA-256: b1b296d371e691ae903fc90e2f3bd69eeac3730137d7c7f5d9379aed02cb51d6
javascript_obj0265_000.js pdf-javascript-stream PDF /JS object 265 at offset 0xEB2 1535 bytes
SHA-256: 04ceb4c2218e7db19a6e007ca4ce846f92c17fff5eaf3a611e71bbd7a5726917
Preview script
First 1,000 lines of the extracted script
if (typeof(xfa_installed) == "undefined" || typeof(xfa_version) == "undefined" || xfa_version < 2.1)
{
   if (app.viewerType == "Reader")
   {
      if (ADBE.Reader_Value_Asked != true)
      {
         if (app.viewerVersion < 6.0)
         {
            if (app.alert(ADBE.Viewer_Form_string_Reader_5x, 1, 1) == 1)
               this.getURL(ADBE.Reader_Value_New_Version_URL + ADBE.SYSINFO, false);
            ADBE.Reader_Value_Asked = true;
         }
         else if (app.viewerVersion < 7.0)
         {
            if (app.alert(ADBE.Viewer_Form_string_Reader_601, 1, 1) == 1)
               app.findComponent({cType:"App", cName:"Reader7", cDesc: ADBE.Viewer_string_Update_Reader_Desc});
            ADBE.Reader_Value_Asked = true;
         }
         else
         {
            if (app.alert(ADBE.Viewer_Form_string_Reader_6_7x, 1, 1) == 1)
               app.findComponent({cType:"Plugin", cName:"XFA", cDesc: ADBE.Viewer_string_Update_Reader_Desc});
            ADBE.Reader_Value_Asked = true;
         }
      }
   }
   else
   {
      if (ADBE.Viewer_Value_Asked != true)
      {
         if (app.viewerVersion < 7.0)
            app.response({cQuestion: ADBE.Viewer_Form_string_Viewer_Older, cDefault: ADBE.Viewer_Value_New_Version_URL + ADBE.SYSINFO, cTitle: ADBE.Viewer_string_Title});
         else if (app.alert(ADBE.Viewer_Form_string_Viewer_7x, 1, 1) == 1)
            app.findComponent({cType:"Plugin", cName:"XFA", cDesc: ADBE.Viewer_string_Update_Desc});
         ADBE.Viewer_Value_Asked = true;
      }
   }
}
javascript_obj0266_001.js pdf-javascript-stream PDF /JS object 266 at offset 0x109E 870 bytes
SHA-256: 4a1aca004cf20431c9a66dce85404a6411a54d881a6c257882260ffc972a13eb
Preview script
First 1,000 lines of the extracted script
if (typeof(ADBE.Reader_Value_Asked) == "undefined")
   ADBE.Reader_Value_Asked = false;
if (typeof(ADBE.Viewer_Value_Asked) == "undefined")
   ADBE.Viewer_Value_Asked = false;
if (typeof(ADBE.Reader_Need_Version) == "undefined" || ADBE.Reader_Need_Version < 7.0)
{
   ADBE.Reader_Need_Version = 7.0;
   ADBE.Reader_Value_New_Version_URL = "http://cgi.adobe.com/special/acrobat/update";
   ADBE.SYSINFO = "?p=" + app.platform + "&v=" + app.viewerVersion + "&l=" + app.language + "&c=" + app.viewerType + "&w=" + "XFA1_6";
}
if (typeof(ADBE.Viewer_Need_Version) == "undefined" || ADBE.Viewer_Need_Version < 7.0)
{
   ADBE.Viewer_Need_Version = 7.0;
   ADBE.Viewer_Value_New_Version_URL = "http://cgi.adobe.com/special/acrobat/update";
   ADBE.SYSINFO = "?p=" + app.platform + "&v=" + app.viewerVersion + "&l=" + app.language + "&c=" + app.viewerType + "&w=" + "XFA1_6";
}
javascript_obj0267_002.js pdf-javascript-stream PDF /JS object 267 at offset 0x11F9 2798 bytes
SHA-256: 922f7942d25f53e6e6eedc1b3a95c47a757faab3be4838fa02db0dbea2c4dbcc
Preview script
First 1,000 lines of the extracted script
if (typeof(this.ADBE) == "undefined")
   this.ADBE = new Object();
ADBE.LANGUAGE = "ENU";
ADBE.Viewer_string_Title = "Adobe Acrobat";
ADBE.Viewer_string_Update_Desc = "Adobe Interactive Forms Update";
ADBE.Viewer_string_Update_Reader_Desc = "Adobe Reader 7.0.5";
ADBE.Reader_string_Need_New_Version_Msg = "This PDF file requires a newer version of Adobe Reader. Press OK to download the latest version or see your system administrator.";
ADBE.Viewer_Form_string_Reader_601 = "This PDF form requires a newer version of Adobe Reader. Although the form may appear to work properly, some elements may function improperly or may not appear at all. Press OK to initiate an online update or see your system administrator.";
ADBE.Viewer_Form_string_Reader_Older = "This PDF form requires a newer version of Adobe Reader. Although the form may appear to work properly, some elements may function improperly or may not appear at all. Press OK for online download information or see your system administrator.";
ADBE.Viewer_Form_string_Viewer_601 = "This PDF form requires a newer version of Adobe Acrobat. Although the form may appear to work properly, some elements may function improperly or may not appear at all. Press OK to initiate an online update or see your system administrator.";
ADBE.Viewer_Form_string_Viewer_60 = "This PDF form requires a newer version of Adobe Acrobat. Although the form may appear to work properly, some elements may function improperly or may not appear at all. For more information please copy the following URL (CTRL+C on Win, Command-C on Mac) and paste into your browser or see your system administrator.";
ADBE.Viewer_Form_string_Viewer_Older = "This PDF requires a newer version of Acrobat. Copy this URL and paste into your browser or see your sys admin.";
ADBE.Viewer_Form_string_Reader_5x = "This PDF form requires a newer version of Adobe Reader. Without a newer version, the form may be displayed, but it might not work properly. Some form elements might not be visible at all. If an internet connection is available, clicking OK will open your browser to a web page where you can obtain the latest version.";
ADBE.Viewer_Form_string_Reader_6_7x = "This PDF form requires a newer version of Adobe Reader. Without a newer version, the form may be displayed, but it might not work properly. Some form elements might not be visible at all. If an internet connection is available, clicking OK will download and install the latest version.";
ADBE.Viewer_Form_string_Viewer_7x = "This PDF form requires a newer version of Adobe Acrobat. Without a newer version, the form may be displayed, but it might not work properly. Some form elements might not be visible at all. If an internet connection is available, clicking OK will download and install the latest version.";
font_00_sfnt_off00002ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF2 94875 bytes
SHA-256: 058d11642e857508126df5662db2c7af4bdc1892e73eea6fc33f2605a1fc3c20
font_01_cff_off0005b76c.bin pdf-font-stream PDF embedded font (cff) at offset 0x5B76C 3846 bytes
SHA-256: a222a5faa686643e85eab1b2c3544319cbd5729a4df934d8ec0e122c87cb5adc
font_02_cff_off0005c875.bin pdf-font-stream PDF embedded font (cff) at offset 0x5C875 5164 bytes
SHA-256: 1f382ea8e50c1720a13008069be1be48e9f1a5772b54908093be17bda663aa16
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.42, consistent with packed or encrypted content.

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