Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b4089a0f8e4ccb5…

MALICIOUS

PDF

72.5 KB Created: 2021-02-23 21:48:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 85dfc50881a3dea38fc5a164bbd1abde SHA-1: a5a45fe1b5c6fcbd76c018527b7ceb0884f14de3 SHA-256: 9b4089a0f8e4ccb5d8f7725a8c38e80d5cbc5a27ac57df62059f272681f054a5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/wix?keyword=powerbilt+golf+clubs+grand+slam PDF link annotation
    • https://toxafowusolele.weebly.com/uploads/1/3/2/8/132815148/95d2b21cf984342.pdfIn PDF document text
    • http://honey-love.ru/baixar_livro_historia_de_israel_no_antigo_testamentou1105.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418368/normal_5fcda60f3895f.pdfIn PDF document text
    • http://ibkreactiva2020.com/sixipogedtthk8.pdfIn PDF document text
    • https://mitamegupep.weebly.com/uploads/1/3/2/3/132302953/c1be98cda8de115.pdfIn PDF document text
    • https://nebomigefut.weebly.com/uploads/1/3/4/3/134359696/ruxageden.pdfIn PDF document text
    • https://nemelodanunoju.weebly.com/uploads/1/3/0/8/130874480/79affc1eac0c86.pdfIn PDF document text
    • http://idslim-italia.site/asphalt_8_apk_obb_file_free_downloadkivaz.pdfIn PDF document text
    • http://cuzinfo.ru/making_movies_sidney_lumet_audiobookml3vj.pdfIn PDF document text
    • https://vamotavobepud.weebly.com/uploads/1/3/1/4/131438348/8561004.pdfIn PDF document text
    • http://fanogizakelime.iblogger.org/bloomberg_bpipe_developer_guide.pdfIn PDF document text
    • http://dsv-trening.ru/flagstaff_police_officer_killed_20207ydiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lanikudawojag.rf.gd/riddles_with_answers_hard.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/days_of_wine_and_roses_lead_sheet.pdfIn PDF document text
    • http://xegiseko.epizy.com/41572242441.pdfIn PDF document text
    • http://lidikulogape.rf.gd/chronological_gospels_chart.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_off0000dd1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1A 5572 bytes
SHA-256: 7504a15b58c9477b960e950dc564c1cd356de3504c9e76d7a458ffa15d7bf050
font_01_sfnt_off0000f015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF015 10760 bytes
SHA-256: 572af10827787965950bb5f52cb607e297be19c8ebefc9fd9466e9e1ef76c557