Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcffa12de13a3dc0…

MALICIOUS

PDF

110.8 KB Created: 2017-11-13 09:58:24 -05:00 Authoring application: Microsoft® Word 2016 (via Neevia Document Converter Pro v6.9 (http://neevia.com))
MD5: aedd29c41061b8b998d75de946f7a6a3 SHA-1: a17369e3c83d5c9f8ae9c492c51b02ace288167a SHA-256: dcffa12de13a3dc08d325d0b410264f89ebee8fe33c7226528dd663bfc13779e
92 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier. A PDF URI heuristic identified an external URL, https://themcdevittstudio.com/blacksad/wp-admin/wp-content/secure.outlook.bhsjsdhsbkjasjbhuiqqhebjasdfbjkbfa/c52653befcf09d98bc637bfbd2336c8f/, which is likely used to deliver a second-stage payload. The document body was unreadable, but the presence of the malicious URL and the detection signatures strongly suggest a dropper or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8510

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7312906-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7312906-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://themcdevittstudio.com/blacksad/wp-admin/wp-content/secure.outlook.bhsjsdhsbkjasjbhuiqqhebjasdfbjkbfa/c52653befcf09d98bc637bfbd2336c8f/
    • http://neevia.com\))/CreationDate(D:20171113095824-05
    • http://neevia.com
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off000008d1.bin
bac4b84dcdbe7d2042f2bbafbc8a9e7e605a88fb285fd03385a9e08deb0e05c7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8D1 223956 bytes

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