Malicious PDF — malware analysis report

Static analysis result for SHA-256 566c53c65c208047…

MALICIOUS

PDF

75.1 KB Created: 2021-03-09 07:22:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5594feaf487f1f4c66069f25a6ded71d SHA-1: d6b36ca342fc22fb716b91322874febf339db767 SHA-256: 566c53c65c208047bed2e3d2b31b1da75d11a391cdbbb7db47fd90c7f017edaa
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lozipotod.ru/award?keyword=self+assessment+property+tax+form+2020+20+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427529/normal_602a1246cdd44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484118/normal_6041ca5c0d409.pdfIn PDF document text
    • http://mimivudarevi.scienceontheweb.net/8517959788.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421038/normal_6041f45f102da.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/diy_bench_shooting_bags.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e00da4a5-6906-4e27-b474-2a9cd320e596/tipogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b93a63-b6ee-4cbe-9e05-122aceb0bb22/baxafozekonaromedu.pdfIn PDF document text
    • https://dab7fb03-f2af-4a8e-9cb9-31de623bedb3.filesusr.com/ugd/58b596_464f77caba964e928bd974d3290d22a8.pdf?index=trueIn PDF document text
    • http://dijuvunote.onlinewebshop.net/tony_evans_bible_commentary_walmart.pdfIn PDF document text
    • http://jifisuxevizek.myartsonline.com/dukepamabexoro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6eabb93-d864-48f1-a81a-fa40a7640f9f/xijixajatimamenuguxave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/605cd918-848e-4816-a4ec-3aaf09ebedb6/mavomalu.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/zewakafamazomigosope.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/linux_shell_script_variable_in_string.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ecf7446-4a51-4de7-9895-0be0f49a6b71/8412485921.pdfIn PDF document text
    • https://3064a0a7-8496-4b95-be1e-56094aee372f.filesusr.com/ugd/0cf4b9_962280d780d1431c90e80f5aef9d076f.pdf?index=trueIn PDF document text
    • https://f579be4a-c2ec-451d-94ee-532237c06880.filesusr.com/ugd/9f6a24_59acd66723074b309ead0940b9820443.pdf?index=trueIn PDF document text
    • http://tobidogajetu.onlinewebshop.net/what_are_the_three_inventory_cost_flow_assumptions.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_off0000e5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5C7 5736 bytes
SHA-256: 3c7f43fdb1065f85ff7d30420aefc0f1f796c3c8cde7565faa80218a4e6a296b
font_01_sfnt_off0000f948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF948 11212 bytes
SHA-256: be233c58b115c1694f7d537f3c6b25ad831af374f4c7d75e4c367c23095d8c00

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