Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0febcce6c7be6d…

MALICIOUS

PDF

73.1 KB Created: 2021-01-02 20:04:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: aefb0c715f7482c1cdbd2ab1605b9be1 SHA-1: 05b28974fcae5eb91113fbc4e551eb6267eafe8b SHA-256: fb0febcce6c7be6daf20a6cbd6adf58323217790230e2d986e7dc3dd9766b5c4
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafffi.ru/wb?keyword=brilliant%20earth%20promo%20code PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408713/normal_5f97bcda29bde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_5fdc62941baf1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471081/normal_5fe17bbe6760a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379233/normal_5f94338b27461.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473632/normal_5fcac94a3825e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413013/normal_5f9a6156afc2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414488/normal_5fa223486ad78.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fatisake/14375230681.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/34266487460.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/beech_hill_primary_school_luton_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/88318229503.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/website_maintenance_report_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/hp_595-p0084_drivers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/146278de-c23c-440d-ae34-24ecdd6bb3a2/ofx_account_software_fee.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa901c92-2609-4c54-acee-7e872bebfd81/corningware_electric_percolator_instructions.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/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://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF10 5184 bytes
SHA-256: 2b84a6ecbae393653b3ffc18be4bd64a69900cbcbf990e248129294bdc643982
font_01_sfnt_off0000f085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF085 11200 bytes
SHA-256: 2a5da003ed33ad8f85641d0ad0f2ba1f4c41ddc5567a2cd001c7827dbb1b0644