Malicious PDF — malware analysis report

Static analysis result for SHA-256 74b337011feb99f0…

MALICIOUS

PDF

43.3 KB Created: 2020-10-25 20:52:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: a8e0e7659a4b347ff2b744552afc5716 SHA-1: 3a86e71d22c3a121d6f1c27afa30d824e901622c SHA-256: 74b337011feb99f00300d7f1d06e2190329482bd9602561dbed2e821f25c91fc
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/pify?keyword=gangstar+vegas+online+hack+android In PDF document text
    • https://mogidudurunupiz.weebly.com/uploads/1/3/2/6/132695636/29189.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/3013112.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/xobapererejogefe.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/4630030.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/gexuwodon-lezoxuvejim-lolis-xeruzojexe.pdfIn PDF document text
    • https://wigegavevimuxak.weebly.com/uploads/1/3/4/1/134132972/musarof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2065/0149/files/crescenta_valley_high_school_ranking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8299/7141/files/ipl_2020_schedule_full.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1030/7749/files/81089844179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1957/5718/files/un_field_security_handbook_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/882970f8-9ef1-406a-b470-038f5cd180a1/gamese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb5901f8-0f4a-4381-8802-e9eba1fc45f5/dewukusebos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd2b4d09-c35a-4411-9e8e-9ff2e8994a7b/lexitamevuxafuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e7d8b4b-575e-4616-a4c7-7d27a7d1c132/steel_detailing_manual_aisc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/612c0fe2-bf6a-41a7-ad4e-b501fb5f264a/58678036238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7be88694-1757-4881-8781-5189fc5daad7/vonavunenubebitawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae1b35a5-3264-46fd-94b4-fad02863daf1/fikesipan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e4a16e9-4981-460f-ba9f-e4b03d70eca1/13133331205.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_off00006969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6969 5356 bytes
SHA-256: f15d39b145c7f9ab9f5df0461c9de6de76cd05b36554e81b1235d6c5aed857e8
font_01_sfnt_off00007b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9F 10784 bytes
SHA-256: 081f7a020c0961516765d4ce2bc37874c542354b4ade3b29fb4f342b65168a36

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