Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59dd1edaf2ed7a2…

MALICIOUS

PDF

107.3 KB Created: 2018-06-12 09:41:10 -04:00
MD5: 89b20e8570b80a33714ab6ea89aa79fd SHA-1: d3a90ce98f6948530e6197a805cae67c182a1770 SHA-256: e59dd1edaf2ed7a2ae8b47c6adeaf168a896ca206db18976a654ce9f4377e9f0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains JavaScript that triggers a fake Adobe Acrobat update prompt and attempts to submit form data to a remote URL. This JavaScript is designed to deceive the user into believing they need to update their software, likely to download a malicious payload. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9477

Heuristics 8

  • 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.
  • 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://mail.donotreply.biz/XVVVNdk5WSTJXVkJUY2psSWFFMHZhVEY2ZG5rNE9XeDZkbkZvV25Sb2FUa3ZlakZUWkZKa1IxWkRNVkIzTUhoTlFqQm5jVGxIYzBWNVl6QmlRa05DZUdGVVNISnVNMnN5TVd0UE5FeGlaWEJDYlc5blJESnlNR2gzUVZSNGFtaDVWakJYWWpKT2FYRXlUVms5TFMxcEwwUnVjVk4yWkd4NWNHRkNaSEZuUlUxNlVuQlJQVDA9LS05MThlYjg0ZTQ3YmJkYmQ2ODE3NjczNDdhMWI0MmFkZjA4MGQ4MGQ4?cid=887146067#FDF
    • https://mail.donotreply.biz/XYTNGbldtSXlSMVJhVHprdlpYTnRibU5CY1ROT04wRkhjU3M1YjFBeWEyVklhREZoTURGeksyZFphMFYwYjFWVVdYWmphbmN2Wm1ack9YUTNRak0xWjNoWlUxbFlLMHg2YTNGV1dUUXhaVmRuZVdsc1VFMU9iMk5pTWl0YWF5OXJTME5ZUVVkcFZTczBWMWRhVm1aMGJuTjVaWFpPVWxOa1VFbDJaMVpOT0doNE0waExOMGx6ZVVwQmNWQnVWMlY1VkVKV2RETkZRa2hWTmpoNWR6TTNPR3cyUjNWc1VuZG1TUzg0UFMwdGRWTnlaakJYVTFOamJraFFNRWN5UXl0NGRXcDNaejA5LS1lMWI2OTc0OWUwM2ZmYTEzYWRjODg3NjQxOGVkODg4OTNmN2NlODc0?cid=887146067
    • https://mail.donotreply.biz/XZFZoVFUzaFZUVlJRV25SdU1saExSRm8xTUd4YWFVVjBWazl0ZUdwNFpHOUZOMHAwT0RjclNrVmFjREV3VVd4TWFIZEhjSGRDUjJSb05tSnNPSGxITTFkUU1EaEpORm92T1Vka1pHaHlabk5oYTNKSWJXOW1TeTlWUm1jd05uSXhiamxuTHpjNVkxUktWRUZSYm5CaFJFSnpPR3hQVmpRNGRVRmthV1UwTjBKTVQzTmFOVXhGV1hoRVV6bEhaamcyUlU1bmRWSnJWV2xKZWxGVmRFWmlPR1ZJT0ZCNVVIbGFXU3RGUFMwdGIydDZPRkY2UTJONU9GaFliM0V2WWxsNE1GSnpRVDA5LS1lMjcwYTMwYTcyZDZjN2EyZjVjZWJlOWYxNzY3Y2QyZjYwNzU3N2Y0?cid=887146067
    • https://mail.donotreply.biz/XZURGblRrTjZUbXhRVVdNd1pYZE1SbEJuYkhaTUswMUtlVlZNZWtrMVJXa3pjRVJXY2xwNlFYQnlVMU5uV21kUGVUWlRWbVIxYjBkWFNGUmtPRnA0WldzNFpHMWxVRWhUV2xOcFNFdDFXVTB6UTBKeFZFUkNhbmRqYm05c1EzQkpWRVJuTkRCeFVrZGhZa0phYW5wV2VHdGhhblZrZVZrdlFVdGthamhhWVZoWk1IZHhjVWc1UlVSblJYZDJTbHB3T1ZkRmMyTTNSalpVYTFaNWQzZHpRa1ExZUdOM1p6SnFkRlZWUFMwdGNtZDFRako2UTNoUk9HZGFPVVpNU2xBdmNIbERVVDA5LS1jMzY0NzM0MjkyOTg1N2E1ZDg4OGNkNTZhZjE0ZThiOTEyYzJmMTQx?cid=887146067
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0012_000.js
ddbbcbfe71a29f9ecad06d655c44c5445ef7afd8ad30cb2ad41647ee3c0efc13		 pdf-javascript-stream PDF /JS object 12 at offset 0x180A 597 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).
javascript_obj0012_001.js
5a1c93261125f3e90a0cf54344bb38d65dd8b212cb19ddd174333bdbe81da213		 pdf-javascript-stream PDF /JS object 12 at offset 0x1831 103710 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 8 long base64-like blob(s).
font_00_cff_off00019643.bin
9340d372ad75a105fdb1627a30e96f892e0dc7d9588c0150cf06b4fa72281cc0		 pdf-font-stream PDF embedded font (cff) at offset 0x19643 4575 bytes

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