Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec5536c5fef471d5…

MALICIOUS

PDF

203.7 KB Created: 2017-09-18 13:05:56 -04:00 Authoring application: Microsoft® Word 2016 (via Neevia Document Converter Pro v6.9 (http://neevia.com))
MD5: 6e641bba05674743ed9dfbe4c63616c0 SHA-1: 235d900295555ea3acd1c73083c560caeb68d0cb SHA-256: ec5536c5fef471d559a891dc779ca9922f5270c5d4d4bcee6dd11c8094b9f108
92 Risk Score

Malware Insights

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

The file was identified as malicious by ClamAV with the signature Pdf.Dropper.Agent-7320429-0. Static analysis revealed an embedded URI pointing to 'http://ttttechnologies.com/yrnIII/yrnIII/yrnIII/yrnIII/index.php', which is likely the initial stage of a download or redirection chain. The ML classifier also flagged the PDF as malicious. No scripts were extracted, but the PDF structure and heuristics indicate a dropper functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5402

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7320429-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7320429-0
  • 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 http://ttttechnologies.com/yrnIII/yrnIII/yrnIII/yrnIII/index.php
    • http://neevia.com\))/CreationDate(D:20170918130556-04
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off000070e8.bin
807c175c2b4e16f8ef38d13f67dbf4e98fa6f389f6b8108255afde3240b9f7c3		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x70E8 190852 bytes
stream_002_off0001d14e.bin
e263ccbdf7fe7b23fa135c8dad4f168a806a4dc77b3341d574863d359e816be5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1D14E 183724 bytes

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