Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa92ac89077d001…

MALICIOUS

PDF

84.4 KB Created: 2021-01-31 07:57:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fa8962175cb154a9b0dc620139170953 SHA-1: 4781687081f5d68a9d8f837c69d01429dd8689d6 SHA-256: 9fa92ac89077d001e324f5d5122abacb5bc8d86ee0c42ad64ef56304512ba2e1
186 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.
  • 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://seumenha.ru/wb?keyword=%D1%80%D0%B5%D0%BA%D0%BE%D1%80%D0%B4%20%D0%BC%D0%B8%D1%80%D0%B0%20%D0%B2%20%D0%BF%D1%80%D1%8B%D0%B6%D0%BA%D0%B0%D1%85%20%D0%B2%20%D0%B4%D0%BB%D0%B8%D0%BD%D1%83%20%D1%83%20%D0%BC%D1%83%D0%B6%D1%87%D0%B8%D0%BD PDF link annotation
    • https://nukoxola.weebly.com/uploads/1/3/1/3/131380146/5142620.pdfIn PDF document text
    • http://besemafobekilir.22web.org/gta_san_andreas_cheat_menu.pdfIn PDF document text
    • https://jekakakum.weebly.com/uploads/1/3/0/9/130969489/kepezazumavesun.pdfIn PDF document text
    • https://vanizubifimid.weebly.com/uploads/1/3/0/8/130874516/kidoseniparuk.pdfIn PDF document text
    • https://vepakuwaderim.weebly.com/uploads/1/3/4/6/134699920/7c4cab8.pdfIn PDF document text
    • http://jedugefipevama.iblogger.org/commercial_property_inspection_report_template_free.pdfIn PDF document text
    • https://xelexezeni.weebly.com/uploads/1/3/0/7/130740222/zanakene.pdfIn PDF document text
    • https://wupugosow.weebly.com/uploads/1/3/1/3/131382590/3a6393d68beb78a.pdfIn PDF document text
    • https://devarewiwigunum.weebly.com/uploads/1/3/2/7/132710712/9825696.pdfIn PDF document text
    • https://funifagokose.weebly.com/uploads/1/3/2/6/132681236/6f2ae3dd.pdfIn PDF document text
    • https://panikelixiguju.weebly.com/uploads/1/3/4/4/134478359/takujobiz.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/pgfhfhi/operate_now_animal_hospital_online.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/2fe7b1f83418331.pdfIn PDF document text
    • https://vuzivofe.weebly.com/uploads/1/3/0/9/130969370/0f8e6312e50d1.pdfIn PDF document text
    • http://timujegewaverun.22web.org/leiningen_versus_the_ants_study_guide_answers.pdfIn PDF document text
    • https://nuzukozifazo.weebly.com/uploads/1/3/2/6/132682871/mibagus-dizamesemu-wofazi-lonumovajeseraf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://felawikemuda.epizy.com/australian_tv_guide_for_tonight.pdfIn PDF document text
    • http://mafolizol.rf.gd/nuvinabuziwowojo.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_off0000fbf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF1 5912 bytes
SHA-256: 01792891a26675bf141660561b250f2b7340e0f28c44dd328d39b13cf5ec7446
font_01_sfnt_off00010fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAE 16072 bytes
SHA-256: a07ec000d3f66c5c264ca98cb6072ba3dc0819b9707701e277639a8e38534a51

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