Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c8d0f1e8f3e0441…

MALICIOUS

PDF

39.1 KB Created: 2020-10-07 07:43:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1429f67c597e5df15a5e58d0ec74ebfb SHA-1: 6627045bfe1b4b2fb6912f17e8db6b237e4fbbe8 SHA-256: 8c8d0f1e8f3e0441b587ca78c75c7e8bb5cea4fbc0f08a403ce1d66c035b860a
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/strik?keyword=genius+gx+gaming+scorpion+k10+manual In PDF document text
    • http://narije.shaikheskander.com/uploads/1/3/0/8/130874422/9780906.pdfIn PDF document text
    • http://zofizapaz.riccifit.com/uploads/1/3/0/7/130776063/suxofafu-memudogasikub-lonise.pdfIn PDF document text
    • http://files.carrolltonpd.net/uploads/1/3/1/4/131437655/xivimexogaxavi-vupojiboke-xanojanorizop.pdfIn PDF document text
    • http://files.themetalheadbox.com/uploads/1/3/1/3/131379049/mitizavola_wazaradi_mimuwunizifuk_xofakuru.pdfIn PDF document text
    • http://fokeduli.store.sssus.com/uploads/1/3/1/4/131483229/220070.pdfIn PDF document text
    • http://files.poppyinthewillows.com.au/uploads/1/3/0/8/130813846/vuvawufes_romajejopo_tefifamuriz.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/1/0486/5605/6488/files/46811653174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0179/1132/files/81121594020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7981/8661/files/58176806803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82b4e434-69f5-4804-b272-da45240e1ff9/rudiwagirizezewotonaforor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8a79c67-0fb6-49fb-b0aa-07ab9c78cea2/vefugulorimap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/004b708e-a5c1-4c83-bb83-c53f13144b38/10874875148.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fe2035f-93ca-462a-a0bf-3139d0b92af0/90884870142.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3C 5612 bytes
SHA-256: 83ea06d966b8198b56eaca7417318defa034269ab8e1d87ba7f6b1b93fe26628
font_01_sfnt_off00006d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D54 10084 bytes
SHA-256: 87d34df4a5e30b196df9092ed2cbc4e5554cfe2a9079b8c1889a574b751ba493

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