Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d1febb358387f7e…

MALICIOUS

PDF

76.9 KB Created: 2021-02-09 00:12:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 107916ae0a691316304936cb186e047d SHA-1: fa962f87e3ab7dd596f3af815cd5a134d82b0b50 SHA-256: 3d1febb358387f7ed64b58c554671e8b4f61f12364072bb4925f326bcef33c8a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/aws?utm_term=information+on+cyathea+arborea PDF link annotation
    • http://euroshopmn.space/3974304197339kv8.pdfIn PDF document text
    • https://gejipowuxenufo.weebly.com/uploads/1/3/4/6/134681439/9501028.pdfIn PDF document text
    • http://delayikapy.xyz/adobe_premiere_pro_cs6_32_bit_free_domi03.pdfIn PDF document text
    • http://instapriz24.online/falawuxinixodugatetizebxvaw.pdfIn PDF document text
    • http://verifedform.com/bandish_pk_song5ihsp.pdfIn PDF document text
    • https://fowuwulavo.weebly.com/uploads/1/3/4/7/134754099/nilomono.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/bitajemisajoz/distance_time_graph_problems_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/41127227566.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/one_baking_sheet_chicken_meals.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/faguwedukibovek.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/agreement_format_between_two_parties_for_money.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/alimentacion_consciente_libro.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/bruner_scaffolding_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/waste_management_poster.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/petebumetasa.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_off0000f048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF048 5092 bytes
SHA-256: 6ed5e557a77b5543247931a1449792073f8f11e5e2859d36b865e70f82099795
font_01_sfnt_off00010179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10179 11284 bytes
SHA-256: 73da005850cea188c212b33507b2af8f2bddcd19a1fdec59195346816e4e9fcd