Malicious PDF — malware analysis report

Static analysis result for SHA-256 3985684af0d55592…

MALICIOUS

PDF

157.3 KB Created: 2019-06-27 19:28:50 -04:00 Authoring application: PDFescape Online - https://www.pdfescape.com (via RAD PDF 3.19.2.2 - https://www.radpdf.com) First seen: 2021-06-20
MD5: 46644ec1c0e95c58e90f42c7e730eb20 SHA-1: 0a15d590dac45cd99df9d212942e14f96c358270 SHA-256: 3985684af0d555920d61d5be09947ebe71e09c3de3eb256bd357913799b9dbff
84 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an image lure, a common tactic for phishing or malware delivery. It embeds multiple URLs, with one specifically identified as a potential entry point for malicious activity. The ClamAV detection 'Pdf.Phishing.Onedrive-9852983-0' further supports a phishing context, suggesting the document is designed to deceive users into providing credentials or downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.1284

Heuristics 4

  • ClamAV: Pdf.Phishing.Onedrive-9852983-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Onedrive-9852983-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 157 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://onedvfax.tk/jss/toda/ In PDF document text
    • http://aliattorney.com/cgi/toda/In PDF document text
    • https://blog.plenitudese.com.br/Office365/Office365/office/voicemail/index.htmIn PDF document text
    • https://www.radpdf.comIn PDF document text
    • https://www.radpdf.com)/Title(GenesisIn PDF document text
    • https://www.pdfescape.com)/CreationDate(D:20190627192850-04In PDF document text
    • http://www.dynaforms.comIn PDF document text
    • https://fileset.3utilities.com/fix/toda/PDF link annotation
    • https://www.pdfescape.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://fontfabrik.comYouIn 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://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/microsoftrootcert.crl0TIn PDF document text
    • http://www.microsoft.com/pki/certs/MicrosoftRootCert.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
font_00_sfnt_off000008bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB 44868 bytes
SHA-256: 7ccdc54d4a5d2541bce8f1dee503ba323e5b4f52fe509013eec5ab87a8540bdc

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