Malicious PDF — malware analysis report

Static analysis result for SHA-256 33283b47ef9bccfe…

MALICIOUS

PDF

52.5 KB Created: 2018-02-27 23:22:30 +11:00 Authoring application: RAD PDF (via RAD PDF 3.5.4.1 - http://www.radpdf.com)
MD5: c987c59994a5396271a1884004c48b49 SHA-1: 5a7ba18d7592525c2bae624752b6b26f05b8b7e3 SHA-256: 33283b47ef9bccfe05ee4ece2a4f1da64b57c1403278ae132329c20d4b0cf150
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for Cloud Document Lure, indicating it impersonates a cloud file-sharing service. The embedded URL, https://onlineclouds.tk/PRO/sharepoint, is presented as the document's content and is the primary mechanism for luring the user. This suggests a phishing attack aimed at credential harvesting or malware delivery.

Heuristics 4

  • ClamAV: Pdf.Phishing.CWS19694f4f-9890229-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.CWS19694f4f-9890229-0
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://onlineclouds.tk/PRO/sharepoint
    • http://www.radpdf.com)/Author(User
    • http://www.dynaforms.com
    • http://www.radpdf.com
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off000004f1.bin
02d5bfd0da07ab289434b3da82a2553dac45c27b997ee1f46f87ae8840bdb9cf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F1 97544 bytes

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