Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1e4f86a7b7a292…

MALICIOUS

PDF

68.3 KB Created: 2021-03-08 18:43:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6e82a0fa8e20368ea8a394eb78e891ed SHA-1: a4aadc8d94fa33d191b935a3765e2b856b7e6783 SHA-256: dc1e4f86a7b7a29281ae9451f199030132e1a0928837ad6d138e4b1a2892373a
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://zajinet.ru/award?keyword=batman+the+killing+joke+free+pdf PDF link annotation
    • http://wujejejifi.mygamesonline.org/lexawetirenevoma.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408172/normal_5fc66b914303d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467955/normal_602f52b7b9b85.pdfIn PDF document text
    • http://welitizenowem.mywebcommunity.org/acer_chromebook_c720_service_manual.pdfIn PDF document text
    • http://trenolgia.buzz/cbse_class_8_reduced_syllabus_2020-_21msa42.pdfIn PDF document text
    • https://pixadodo.weebly.com/uploads/1/3/2/7/132740612/xenadimap.pdfIn PDF document text
    • https://vibofizetukoz.weebly.com/uploads/1/3/0/9/130969748/409da97ddfd1.pdfIn PDF document text
    • https://fidagavatijib.weebly.com/uploads/1/3/1/3/131398583/ba8b88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451356/normal_6029c81f07c9b.pdfIn PDF document text
    • https://devanuwi.weebly.com/uploads/1/3/0/9/130969177/bokodesiko.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/89796400901.pdfIn PDF document text
    • http://gvidilon.ru/how_long_does_it_take_trees_to_grow_in_the_forestwpc04.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/98fc45e4-6123-4e6e-bfd6-db2070805fd7/13650274580.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69751de2-7a16-43ea-abfb-e86f694d5041/mozodofegezobub.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/material_approval_request_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04940e86-9f07-4e2b-be61-86568678f217/jusodiwinenoxebonalisisa.pdfIn PDF document text
    • http://xuvuzonixo.onlinewebshop.net/bjt_switching_characteristics.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/raul_di_blasio_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94ca6bb4-a7c5-427b-9a0d-9e51b664c0f9/los_5_lenguajes_del_amor_online.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/episcopal_baptismal_certificate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71a62448-1ec5-458e-853d-d13bd4c0ea09/79237441826.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_off0000cde6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE6 5464 bytes
SHA-256: c87605025b3a524748d5c2bd02bd3cf3bd1d0b31305660f7fe434a2a864a9140
font_01_sfnt_off0000e05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05E 10560 bytes
SHA-256: 4c7cc1fc737b3f9029e08b521770128edc015373a1e0e6207f8b8649c6f7025d

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