Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f64bc5fe559d4f7…

MALICIOUS

PDF

185.3 KB Created: 2016-02-01 21:39:42 -06:00 Authoring application: http://www.convertapi.com
MD5: e74089084b76751e6da9ed2a7a1c53bb SHA-1: 96aec6ba689052bfff520160130748c12397d1c7 SHA-256: 6f64bc5fe559d4f70c952148e7e3089ec13c61c6a822848ca00efb620c193bbe
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was detected as malicious by ClamAV with the signature Pdf.Dropper.Agent-7270991-0. It contains an embedded URI pointing to 'http://www.webradionativa.com.br/diemke/aos/index.htm', which is likely the malicious landing page. The PDF structure and embedded URI suggest an attempt to deliver a payload or phish users by directing them to a compromised or malicious website.

Machine Learning

  • Nyx PDF Classifier clean score 0.0073

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7270991-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7270991-0
  • 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://www.webradionativa.com.br/diemke/aos/index.htm
    • http://www.convertapi.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/
    • 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/MicrosoftTimeStampPCA.crl0X
    • http://www.microsoft.com/pki/certs/MicrosoftTimeStampPCA.crt0
    • http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl0T
    • http://www.microsoft.com/pki/certs/MicrosoftRootCert.crt0
    • http://www.microsoft.com/typography
    • http://www.microsoft.com/typography/ctfontshttp://fontfabrik.comYou
    • http://www.microsoft.com/typography/fonts/default.aspx

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off00000526.bin
b8e0b8d4ced25ffe53774813ba7d84ca52ad4abd182f77a3e8c0bbf8871c8192		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x526 230232 bytes
font_01_sfnt_off00010d7f.bin
82d2c35f75b02e9d3ac7f5acbd8c0b378d7e7157f5d17da73a0de827ac94dd53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D7F 189952 bytes

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