Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6ed6c3a69424406…

MALICIOUS

PDF

61.5 KB Created: 2021-02-17 20:30:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5e9f9ce23f5aba8e4ce3c82b912635a9 SHA-1: b7c85d8df389ffa5c7a3022bc07ae85ed16aaa85 SHA-256: e6ed6c3a694244064be96b9a04d957e1d6d9a4eee52898e6dd82f96dcf50ef11
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/123?utm_term=how+to+program+suddenlink+altice+remote+to+tv PDF link annotation
    • https://cdn.sqhk.co/duzixulok/iarjahd/mechanical_engineering_technology_vs_mechanical_engineering.pdfIn PDF document text
    • https://kuvobawodamelis.weebly.com/uploads/1/3/5/3/135350379/89e7dddbd.pdfIn PDF document text
    • https://wesulabiduzipu.weebly.com/uploads/1/3/4/2/134235649/balobezalaru-xojaka-dalesozepogel-mezetu.pdfIn PDF document text
    • https://cdn.sqhk.co/govamopega/ifRpdic/go_fish_restaurant_mystic_connecticut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459654/normal_5ff810803c43a.pdfIn PDF document text
    • https://cdn.sqhk.co/vunofufi/giii15v/show_my_number_etisalat_uae.pdfIn PDF document text
    • https://bewepuxajijasi.weebly.com/uploads/1/3/4/3/134362307/badc96d10614e5.pdfIn PDF document text
    • https://cdn.sqhk.co/birugafomafo/hgjawje/95366388551.pdfIn PDF document text
    • https://cdn.sqhk.co/joxonorapa/PgeV0us/tutefafiredumutuvaguxir.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwifemi/XiCZ2gc/55752515483.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379355/normal_5fe413f70ae42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420237/normal_60276a4574d5a.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/jepavilutabilel/sapubifewutosoti.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/bizagi_modeler_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/angle_pair_relationships_worksheet_key.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/9449827260.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/4227016.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/excel_budget_template_for_students.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_off0000b776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB776 5572 bytes
SHA-256: 693cc69397168719275a2c3491c9e747712ff4a45fd24ff1a242b50249648039
font_01_sfnt_off0000ca67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA67 8832 bytes
SHA-256: 584832ba711f2010c5551f43688d39b157a3a9269cee050040b71e77e0f93345

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