Malicious PDF — malware analysis report

Static analysis result for SHA-256 40439d77fdb4712f…

MALICIOUS

PDF

53.8 KB Created: 2018-02-27 23:22:30 +11:00 Authoring application: RAD PDF (via RAD PDF 3.4.1.1 - http://www.radpdf.com) First seen: 2021-07-02
MD5: f2d114d09e0d930a24cfda840f33d5b3 SHA-1: 01809a5289ce9ffdbc81f4a12c42a07af6841d34 SHA-256: 40439d77fdb4712fb8f597e9800ee3f7d43e1539044865ad183a1656e7163941
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document uses a cloud service lure to trick users into clicking malicious links. The embedded URLs, such as 'https://xrtbrgbtg.co/benz/doc/', likely lead to a phishing page or a second-stage malware download. The ClamAV detection 'Pdf.Phishing.CWS19694f4f-9890229-0' further supports the phishing and malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier clean score 0.0236

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://xrtbrgbtg.co/benz/doc/ PDF link annotation
    • http://carolasomare.com/den/lion/login/In PDF document text
    • http://jamiadhannapurbd.com/den/lion/login/In PDF document text
    • http://judiremi.com/den/lion/login/In PDF document text
    • http://www.digicainc.com/den/lion/login/In PDF document text
    • http://financialzip.com/den/lion/login/In PDF document text
    • http://djrknkraja.info/den/lion/login/In PDF document text
    • http://www.radpdf.comIn PDF document text
    • http://www.radpdf.com)/Author(UserIn PDF document text
    • http://www.dynaforms.comIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://www.microsoft.com/typography/ctfontshttp://lucasfonts.comMicrosoftIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text
    • http://www.microsoft.com/typography/fonts/default.aspxIn PDF document text
    • http://crl.microsoft.com/pki/crl/products/MicrosoftTimeStampPCA.crl0XIn PDF document text
    • http://www.microsoft.com/pki/certs/MicrosoftTimeStampPCA.crt0In PDF document text
    • http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl0TIn PDF document text
    • http://www.microsoft.com/pki/certs/MicrosoftRootCert.crt0In PDF document text
    • http://www.microsoft.com/pkiops/crl/MicCodSigPCA2011_2011-07-08.crl0aIn PDF document text
    • http://www.microsoft.com/pkiops/certs/MicCodSigPCA2011_2011-07-08.crt0In PDF document text
    • http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl0^In PDF document text
    • http://www.microsoft.com/pki/certs/MicRooCerAut2011_2011_03_22.crt0��In PDF document text
    • http://www.microsoft.com/pkiops/docs/primarycps.htm0@In PDF document text
    • http://www.microsoft.com/TypographyIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off00000a32.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA32 97544 bytes
SHA-256: 02d5bfd0da07ab289434b3da82a2553dac45c27b997ee1f46f87ae8840bdb9cf

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