Malicious PDF — malware analysis report

Static analysis result for SHA-256 285c17dc3443f9da…

MALICIOUS

PDF

72.8 KB Created: 2021-03-03 08:25:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e235ca5cead0b9406f25b3ad646d7c3d SHA-1: 43e0f6920f395ea6b986f5615d683d841aa625c2 SHA-256: 285c17dc3443f9da6e1d54da7ed8d28652e84be258e5967e9211be870f41f74f
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://botokaw.ru/award?keyword=motorola+xpr+3500e+case PDF link annotation
    • http://ulekschool.online/66951934994rpv2m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456671/normal_5fd3972a25de6.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/lowuwofuxali/muzodixabofifurojarozi.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/clear_acrylic_sheets_lowes.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/tipakakegudobisefasadak.pdfIn PDF document text
    • http://xenuduximowub.epizy.com/wumobixuwodi.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/a_que_edad_se_caso_eva_luna_montaner.pdfIn PDF document text
    • http://datidogebe.epizy.com/cidr_full_form_in_aadhar.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/nilivusimozobiz.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/rigenorigunuxodofatipot.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/30563182577.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/california_lottery_jackpot_report.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/dnd_5e_critical_hit_spell.pdfIn PDF document text
    • https://s3.amazonaws.com/gopifu/datepicker_format_dd_mm_yyyy_android.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/10432543295.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/factores_de_riesgo_en_el_trabajo.pdfIn PDF document text
    • http://webubekesivamuf.epizy.com/advanced_java_interview_questions_for_experienced.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_off0000de1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1A 5432 bytes
SHA-256: dda3235ca148693e9d23456d68c363ec1d5da7b15fea77cba15667bc5abce6d8
font_01_sfnt_off0000f0ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AD 11152 bytes
SHA-256: 23d3f6a9867ea41b370cf807e1760f8fe17ee64bd22e488856c15025af9ea15b