Malicious PDF — malware analysis report

Static analysis result for SHA-256 87673996cddbc28f…

MALICIOUS

PDF

88.3 KB Created: 2016-06-01 07:58:44 +08:00 Authoring application: Microsoft® Office Word 2007
MD5: 50c4c913f3d993b25055eaf60b42df34 SHA-1: 14ed57d6334b73df35d913452e67e3cf10d89b82 SHA-256: 87673996cddbc28f30a0b78d711dc5f789a7ad69db1ebf3f1bd56e6f66dd0a39
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Dropper.Agent-7279327-0. This suggests the document is designed to trick users into visiting the malicious site, likely to download further malware. No scripts were extracted, but the presence of the malicious URL and the ClamAV detection strongly indicate a dropper or downloader functionality.

Machine Learning

  • Nyx PDF Classifier clean score 0.1105

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7279327-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7279327-0
  • 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://zedopastel.com.br/includes/
    • http://www.microsoft.com/typography/ctfontshttp://fontfabrik.comYou
    • http://www.microsoft.com/typography/fonts/default.aspx
    • http://crl.microsoft.com/pki/crl/products/MicrosoftTimeStampPCA.crl0X
    • http://www.microsoft.com/pki/certs/MicrosoftTimeStampPCA.crt0
    • http://crl.microsoft.com/pki/crl/products/MicCodSigPCA_08-31-2010.crl0Z
    • http://www.microsoft.com/pki/certs/MicCodSigPCA_08-31-2010.crt0
    • http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl0T
    • http://www.microsoft.com/pki/certs/MicrosoftRootCert.crt0
    • http://www.microsoft.com/typography

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000020c2.bin
4a73654ce920bc816ddb5d809346ffda41a4bc02659781fa0c3452dd6073aea4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x20C2 177568 bytes

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