Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0dc6fbcf2edc45…

MALICIOUS

PDF

81.1 KB Created: 2021-02-08 06:59:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4e3d433b68b93edf76f9c5577801ed97 SHA-1: 80c3e22d052fd42bb865666ac309e199f10b7a2a SHA-256: 6d0dc6fbcf2edc45b0be4510fdbf8e19241276d3104c88977944058e863f91d2
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://leonvi.ru/wb?keyword=boosted%20performance%20single%20turbo%20kit%20g35 PDF link annotation
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/6862359.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/Oichgid/table_tennis_doubles_scoring_rules.pdfIn PDF document text
    • https://mutevoleronuxo.weebly.com/uploads/1/3/5/3/135351112/tivokutemepevudobaf.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/fibRihj/lugo_barber_shop_brooklyn_ny.pdfIn PDF document text
    • http://nolesed.22web.org/graphic_design_interview_questions_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/fobonelaga/0jcJWgf/sound_physicians_emergency_medicine_of_texas.pdfIn PDF document text
    • https://menudapopejit.weebly.com/uploads/1/3/0/7/130775932/bejixifuzuvuv_nitugisumo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501482/normal_6012275765675.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/jjfhagj/free_video_editor_app_for_iphone_without_watermark.pdfIn PDF document text
    • https://cdn.sqhk.co/subilikiwi/Ggigfjf/76687644507.pdfIn PDF document text
    • https://cdn.sqhk.co/jimumakevaji/gegARja/fly_this_simulator.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/labitajaxatufib/behavioural_activation_for_depression.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/29210621860.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/pathology_book_for_mbbs.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/boot_camp_can_t_windows_support_software.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_off0000fdd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDD8 6016 bytes
SHA-256: 912d7609616965ee7f34845d2531fc3fcd11758b3edf97854e8cf8c414056f73
font_01_sfnt_off0001123b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123B 11072 bytes
SHA-256: 113e2c414820beefc3e6d90ab98b8fc5d8c015ce8bc4c4ce0fea2565393f03bd

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