Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffb94145563d8cce…

MALICIOUS

PDF

107.3 KB Created: 2018-06-12 09:41:10 -04:00
MD5: a6ebe3b66cb084150f71dae434adcc04 SHA-1: fa3af7ed2ae6fcdf4ef2d3223dd436387b1dbe9d SHA-256: ffb94145563d8cced3e25785ac19f6c525291476799dbd9f0dee7d2730a0d094
128 Risk Score

Malware Insights

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

The PDF document contains embedded JavaScript that triggers an auto-submission form action, displaying a fake Acrobat updater lure to trick the user. This JavaScript is designed to download and execute a second-stage payload from the provided URLs.

Heuristics 7

  • PDF auto-runs JavaScript form submission on open critical PDF_OPENACTION_JS_SUBMITFORM
    PDF uses /OpenAction to run JavaScript that calls submitForm() with an external HTTP(S) URL. Opening the document triggers the outbound submission path without requiring a normal link click.
    URL https://online-banking.kb4.io/XSzJKdmNERTVSM1ZSVkVkYU1ETjBUVk5vYUZCNWJYSnlUekEzWW1KQkwwcHJTa0Z6YzI4M1NIVkdMMDVwTW1aWk0yTTJPSEpCZVhneE5rRk5TRkZZU1Rnd2RUZExLelpYUWpGNVdHNXRSVkZ4WW5KWlkyUjJORk5ZWldWNVJVNWpVVEJLYlc4eWVrMU1ZWE05TFMxRFQxVmxaVWh6Y1d4ak5qVlpZbFIxVUhsc1pFRkJQVDA9LS00NWYzZjQ2ODFlYjc1MjNlOTNkYTdiMGY4YjBlNGRhYzk2MWRjZGRh?cid=1397501192#FDF
  • PDF JavaScript shows fake Acrobat updater prompt high PDF_FAKE_ACROBAT_UPDATE_LURE
    PDF JavaScript displays Acrobat/update-themed language such as a document rendering engine update or remote connection to Adobe servers. When paired with JavaScript or external submission, this is a social-engineering lure rather than benign document text.
    URL https://online-banking.kb4.io/XSzJKdmNERTVSM1ZSVkVkYU1ETjBUVk5vYUZCNWJYSnlUekEzWW1KQkwwcHJTa0Z6YzI4M1NIVkdMMDVwTW1aWk0yTTJPSEpCZVhneE5rRk5TRkZZU1Rnd2RUZExLelpYUWpGNVdHNXRSVkZ4WW5KWlkyUjJORk5ZWldWNVJVNWpVVEJLYlc4eWVrMU1ZWE05TFMxRFQxVmxaVWh6Y1d4ak5qVlpZbFIxVUhsc1pFRkJQVDA9LS00NWYzZjQ2ODFlYjc1MjNlOTNkYTdiMGY4YjBlNGRhYzk2MWRjZGRh?cid=1397501192#FDF
    • https://online-banking.kb4.io/XV2twb2RVWmpXSElyYUhkRE1EWnljV01yTTFCb1dFWTBWU3RRTDJwbU15OU9ialUxYjBKNFZYQllhVGcxY3pCUE5IbE5OWE5MVWxwb2VsWmpSR1o1U2pWNWExVjNSMHhUVkVNd2RrMXZUSGR1VWsxNVptdFBlVU5sTjJobGFFdE1OMFZUVTNoQk5tVXhPWEIzVUM5MVpEWlhiR2xwYUZGc1MweEVWRE5JUWtFNVJGb3ZOQzk0U2t0YVRURTVRazVCTlhGU2QyRkxWVUphUmpRd2JXMXdabk52WkU5dGJFTlNXRGxSUFMwdFUwMTZOVFZXWlZaVGJVcEZPVGQzYzBWNksyZEhaejA5LS1iY2UxMTY5OGI5NTFlNDdhNzQ0YzRjMDBkMDU0YWU2OGFhMTJkOGIw?cid=1397501192
    • https://online-banking.kb4.io/XUWsxYVdHczRNRGt2YjJoTVMyNUxURTlEU1hobU5ISXlXREZ3ZUVkRWQzWTRkbTAwV0hoS2F5OVZNV04wY0VoMGVERm1lSEF5ZWpkamRUZEViMUJsZEZNeFExbFVOMDh5ZERaSmNUaHVTbkZqVGsxUGRrdEJhREJUYm5Wc1ZuRnlVa2xGZUhoRVlXaHBaa2hWZURSVlZUbFpRVk0wVWpkV05UbDJTVEpwWTNwdGNURlRUM0pXU2tKYWNGaHNaSEpzU25sVWMyMVJlV0puWkhkeVdEWlpkMWh2Y1ZRemEyTkZSRGRuUFMwdGJsQTRheko0Y0hKdldFeEVhSEZ3VDBWdVdETmtVVDA5LS1iZjBmODY5ZGUxMzVkMTEzYTYxZGI1ZmMzMTdkZWUyZjk2MTYxNzRj?cid=1397501192
    • https://online-banking.kb4.io/XTVRaaWJsQm5ZWEZaWnpKNFZsTlZjV3BWZDNkT2VHTkpiSEJhY21OaFNWRlZSRmxGS3pSek0xSlZaR0l3WVRZclJtbENiMlE0ZGpObE1VaG5ZWEZpT1VWcWFVbGFPR2g2Wld4eFdIRlFhWFJxV21KTkx6SnlhMmRWVlRSNlN6WTVhR3RuZDNGTVJsVkRNVFJPUVRCeFlUTkZkWE14YWtSRFpubHNTVUYwY0U5dFdTdGxjV1pEUVRkVmNXcGtkMlpVYUU4NU9HdENWRlZHVmtOd1owaE5WMGhHVm1oRGVHa3JTRGRSUFMwdE4weGFkVzVNUmpKWVlXWmlRak5HUTA1SlJVWlNaejA5LS0zNmY2YzM4Y2Q0NDk5MzcxYTVkNGIzMDBiZWEzZmM0NTIzZDhiMWI2?cid=1397501192
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
  • JavaScript action low 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
    URL https://online-banking.kb4.io/XSzJKdmNERTVSM1ZSVkVkYU1ETjBUVk5vYUZCNWJYSnlUekEzWW1KQkwwcHJTa0Z6YzI4M1NIVkdMMDVwTW1aWk0yTTJPSEpCZVhneE5rRk5TRkZZU1Rnd2RUZExLelpYUWpGNVdHNXRSVkZ4WW5KWlkyUjJORk5ZWldWNVJVNWpVVEJLYlc4eWVrMU1ZWE05TFMxRFQxVmxaVWh6Y1d4ak5qVlpZbFIxVUhsc1pFRkJQVDA9LS00NWYzZjQ2ODFlYjc1MjNlOTNkYTdiMGY4YjBlNGRhYzk2MWRjZGRh?cid=1397501192#FDF
    • https://online-banking.kb4.io/XV2twb2RVWmpXSElyYUhkRE1EWnljV01yTTFCb1dFWTBWU3RRTDJwbU15OU9ialUxYjBKNFZYQllhVGcxY3pCUE5IbE5OWE5MVWxwb2VsWmpSR1o1U2pWNWExVjNSMHhUVkVNd2RrMXZUSGR1VWsxNVptdFBlVU5sTjJobGFFdE1OMFZUVTNoQk5tVXhPWEIzVUM5MVpEWlhiR2xwYUZGc1MweEVWRE5JUWtFNVJGb3ZOQzk0U2t0YVRURTVRazVCTlhGU2QyRkxWVUphUmpRd2JXMXdabk52WkU5dGJFTlNXRGxSUFMwdFUwMTZOVFZXWlZaVGJVcEZPVGQzYzBWNksyZEhaejA5LS1iY2UxMTY5OGI5NTFlNDdhNzQ0YzRjMDBkMDU0YWU2OGFhMTJkOGIw?cid=1397501192
    • https://online-banking.kb4.io/XUWsxYVdHczRNRGt2YjJoTVMyNUxURTlEU1hobU5ISXlXREZ3ZUVkRWQzWTRkbTAwV0hoS2F5OVZNV04wY0VoMGVERm1lSEF5ZWpkamRUZEViMUJsZEZNeFExbFVOMDh5ZERaSmNUaHVTbkZqVGsxUGRrdEJhREJUYm5Wc1ZuRnlVa2xGZUhoRVlXaHBaa2hWZURSVlZUbFpRVk0wVWpkV05UbDJTVEpwWTNwdGNURlRUM0pXU2tKYWNGaHNaSEpzU25sVWMyMVJlV0puWkhkeVdEWlpkMWh2Y1ZRemEyTkZSRGRuUFMwdGJsQTRheko0Y0hKdldFeEVhSEZ3VDBWdVdETmtVVDA5LS1iZjBmODY5ZGUxMzVkMTEzYTYxZGI1ZmMzMTdkZWUyZjk2MTYxNzRj?cid=1397501192
    • https://online-banking.kb4.io/XTVRaaWJsQm5ZWEZaWnpKNFZsTlZjV3BWZDNkT2VHTkpiSEJhY21OaFNWRlZSRmxGS3pSek0xSlZaR0l3WVRZclJtbENiMlE0ZGpObE1VaG5ZWEZpT1VWcWFVbGFPR2g2Wld4eFdIRlFhWFJxV21KTkx6SnlhMmRWVlRSNlN6WTVhR3RuZDNGTVJsVkRNVFJPUVRCeFlUTkZkWE14YWtSRFpubHNTVUYwY0U5dFdTdGxjV1pEUVRkVmNXcGtkMlpVYUU4NU9HdENWRlZHVmtOd1owaE5WMGhHVm1oRGVHa3JTRGRSUFMwdE4weGFkVzVNUmpKWVlXWmlRak5HUTA1SlJVWlNaejA5LS0zNmY2YzM4Y2Q0NDk5MzcxYTVkNGIzMDBiZWEzZmM0NTIzZDhiMWI2?cid=1397501192
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/
  • External URI info PDF_URI
    PDF contains an external URL action
    URL https://online-banking.kb4.io/XV2twb2RVWmpXSElyYUhkRE1EWnljV01yTTFCb1dFWTBWU3RRTDJwbU15OU9ialUxYjBKNFZYQllhVGcxY3pCUE5IbE5OWE5MVWxwb2VsWmpSR1o1U2pWNWExVjNSMHhUVkVNd2RrMXZUSGR1VWsxNVptdFBlVU5sTjJobGFFdE1OMFZUVTNoQk5tVXhPWEIzVUM5MVpEWlhiR2xwYUZGc1MweEVWRE5JUWtFNVJGb3ZOQzk0U2t0YVRURTVRazVCTlhGU2QyRkxWVUphUmpRd2JXMXdabk52WkU5dGJFTlNXRGxSUFMwdFUwMTZOVFZXWlZaVGJVcEZPVGQzYzBWNksyZEhaejA5LS1iY2UxMTY5OGI5NTFlNDdhNzQ0YzRjMDBkMDU0YWU2OGFhMTJkOGIw?cid=1397501192
  • 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.
    URL https://online-banking.kb4.io/XSzJKdmNERTVSM1ZSVkVkYU1ETjBUVk5vYUZCNWJYSnlUekEzWW1KQkwwcHJTa0Z6YzI4M1NIVkdMMDVwTW1aWk0yTTJPSEpCZVhneE5rRk5TRkZZU1Rnd2RUZExLelpYUWpGNVdHNXRSVkZ4WW5KWlkyUjJORk5ZWldWNVJVNWpVVEJLYlc4eWVrMU1ZWE05TFMxRFQxVmxaVWh6Y1d4ak5qVlpZbFIxVUhsc1pFRkJQVDA9LS00NWYzZjQ2ODFlYjc1MjNlOTNkYTdiMGY4YjBlNGRhYzk2MWRjZGRh?cid=1397501192#FDF
    • https://online-banking.kb4.io/XV2twb2RVWmpXSElyYUhkRE1EWnljV01yTTFCb1dFWTBWU3RRTDJwbU15OU9ialUxYjBKNFZYQllhVGcxY3pCUE5IbE5OWE5MVWxwb2VsWmpSR1o1U2pWNWExVjNSMHhUVkVNd2RrMXZUSGR1VWsxNVptdFBlVU5sTjJobGFFdE1OMFZUVTNoQk5tVXhPWEIzVUM5MVpEWlhiR2xwYUZGc1MweEVWRE5JUWtFNVJGb3ZOQzk0U2t0YVRURTVRazVCTlhGU2QyRkxWVUphUmpRd2JXMXdabk52WkU5dGJFTlNXRGxSUFMwdFUwMTZOVFZXWlZaVGJVcEZPVGQzYzBWNksyZEhaejA5LS1iY2UxMTY5OGI5NTFlNDdhNzQ0YzRjMDBkMDU0YWU2OGFhMTJkOGIw?cid=1397501192
    • https://online-banking.kb4.io/XUWsxYVdHczRNRGt2YjJoTVMyNUxURTlEU1hobU5ISXlXREZ3ZUVkRWQzWTRkbTAwV0hoS2F5OVZNV04wY0VoMGVERm1lSEF5ZWpkamRUZEViMUJsZEZNeFExbFVOMDh5ZERaSmNUaHVTbkZqVGsxUGRrdEJhREJUYm5Wc1ZuRnlVa2xGZUhoRVlXaHBaa2hWZURSVlZUbFpRVk0wVWpkV05UbDJTVEpwWTNwdGNURlRUM0pXU2tKYWNGaHNaSEpzU25sVWMyMVJlV0puWkhkeVdEWlpkMWh2Y1ZRemEyTkZSRGRuUFMwdGJsQTRheko0Y0hKdldFeEVhSEZ3VDBWdVdETmtVVDA5LS1iZjBmODY5ZGUxMzVkMTEzYTYxZGI1ZmMzMTdkZWUyZjk2MTYxNzRj?cid=1397501192
    • https://online-banking.kb4.io/XTVRaaWJsQm5ZWEZaWnpKNFZsTlZjV3BWZDNkT2VHTkpiSEJhY21OaFNWRlZSRmxGS3pSek0xSlZaR0l3WVRZclJtbENiMlE0ZGpObE1VaG5ZWEZpT1VWcWFVbGFPR2g2Wld4eFdIRlFhWFJxV21KTkx6SnlhMmRWVlRSNlN6WTVhR3RuZDNGTVJsVkRNVFJPUVRCeFlUTkZkWE14YWtSRFpubHNTVUYwY0U5dFdTdGxjV1pEUVRkVmNXcGtkMlpVYUU4NU9HdENWRlZHVmtOd1owaE5WMGhHVm1oRGVHa3JTRGRSUFMwdE4weGFkVzVNUmpKWVlXWmlRak5HUTA1SlJVWlNaejA5LS0zNmY2YzM4Y2Q0NDk5MzcxYTVkNGIzMDBiZWEzZmM0NTIzZDhiMWI2?cid=1397501192
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/tiff/1.0/
    • http://ns.adobe.com/exif/1.0/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
cb072980b434031aa29a64d39eef10e8bc436cd57349b57c53addc4d5b0cc1e5		 pdf-javascript-stream PDF /JS object 12 at offset 0x180A 600 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
font_00_cff_off0001964f.bin
9340d372ad75a105fdb1627a30e96f892e0dc7d9588c0150cf06b4fa72281cc0		 pdf-font-stream PDF embedded font (cff) at offset 0x1964F 4575 bytes

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