Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e098ee5a85215af…

MALICIOUS

PDF

73.9 KB Created: 2021-05-10 17:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 570f56769aba788d55e94933184dbb2f SHA-1: c30d6074032b1d6b234cbb24559f735a14ee794a SHA-256: 0e098ee5a85215afddf6f6fe0069da95f04719da1f044a6d23e733d8a8ac40ca
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • 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://mezovuduw.ru/strik?utm_term=burning+wheel+yoga PDF link annotation
    • https://jikuvubavul.weebly.com/uploads/1/3/5/9/135964228/5874660.pdfIn PDF document text
    • https://duloduwo.weebly.com/uploads/1/3/4/8/134850843/fogusuretubu_xesufixez_pafino_matuza.pdfIn PDF document text
    • https://xosenevofas.weebly.com/uploads/1/3/5/3/135324499/fba70462.pdfIn PDF document text
    • http://xenakasewexibal.sportsontheweb.net/blue_eyes_technology_seminar.pdfIn PDF document text
    • http://rupaduwovuw.getenjoyment.net/catalogo_de_cuentas_mexico.pdfIn PDF document text
    • http://zimezobot.getenjoyment.net/goteromubumapiluzoluw.pdfIn PDF document text
    • http://creditscoretracking.info/vawumekedubetubamitapvv1q1.pdfIn PDF document text
    • https://duniterete.weebly.com/uploads/1/3/4/6/134690204/9083307.pdfIn PDF document text
    • https://mikakegurotitu.weebly.com/uploads/1/3/4/3/134309030/2b4cb.pdfIn PDF document text
    • https://togezajotutev.weebly.com/uploads/1/3/0/8/130874352/3015556.pdfIn PDF document text
    • http://qupieasy.online/jovogekiwurowogujorekudozrad3.pdfIn PDF document text
    • http://toxipoxekej.medianewsonline.com/business_plan_for_online_shopping_website.pdfIn PDF document text
    • http://private-channel.site/principles_of_economics_8th_edition_answersiuucu.pdfIn PDF document text
    • https://vopobibipudo.weebly.com/uploads/1/3/4/6/134620476/4864310.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zavukazena.epizy.com/livro_anlise_combinatria_e_probabilidade_morgado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/974f0acb-ea83-499b-8f0f-80c1fce49d9e/57617866659.pdfIn PDF document text
    • http://sipanokule.onlinewebshop.net/pibuse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d583e3e0-59ea-4c9a-ae58-81e80363df4d/which_garmin_transducer.pdfIn PDF document text
    • http://sokurunofizune.rf.gd/50917009752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8af3e8c3-a2c1-43c7-ac32-b456f7512418/80994933067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb202e20-c3cb-4ff6-8864-01b9f878e015/maytag_bravos_xl_washer_turns_on_by_itself.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_off0000e5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BA 5012 bytes
SHA-256: 679f8b28330fc4ad24f09517978fe36a373e407f4138b7bbfc54dc86115901a2
font_01_sfnt_off0000f6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DA 10740 bytes
SHA-256: faeb34d99490e109556ff204451d929a78af6b380a4f738bdd5fb4efdd33885e

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