Malicious PDF — malware analysis report

Static analysis result for SHA-256 334b0d44ee73c833…

MALICIOUS

PDF

62.3 KB Created: 2020-10-15 15:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 96781509acb3cd4bdba9fdddaf1da7b3 SHA-1: 72c23d14c96261172076b9dc4886c88d81c4f210 SHA-256: 334b0d44ee73c833ddd5018a66f5a9ef5416aa946d8f2951340b8728bb662cbe
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://ggtraff.ru/123?keyword=custom+camera+preview+android+example In PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/3703292.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/6256616.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dekegu.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/nifit.pdfIn PDF document text
    • https://bewupoterefi.weebly.com/uploads/1/3/1/3/131380107/4050193.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f873cc7a1824.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365659/normal_5f87dffa0915c.pdfIn PDF document text
    • https://vurofagulomefu.weebly.com/uploads/1/3/1/4/131452840/xokunomafel.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/lixavej_rivutavipulox_vunezikavad_lirumonoguwako.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/665612.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/6240334.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/7d37fb7.pdfIn PDF document text
    • https://vekejuritikoj.weebly.com/uploads/1/3/1/8/131857631/9293837.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/pejajofedaxevaw_kozadesupuke.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/d91c2928fdfa0.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/9397173.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/gowijipomunolu_lirogub_loletakimup_rozugofekowe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e07fccbd-2339-4ccd-87bd-ee9f4f5ed0e6/nobarotarusizuzeku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aeb21fe-df43-48b6-a637-faa22d2f7024/fumasijisurizowujepifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/debab6ba-3071-4274-abc8-f874b80666e2/73299157928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f805eb75-4b2e-404b-afac-eba8af288eac/dimezo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8874 5764 bytes
SHA-256: 2f4bbe1d480c26962d434a0ac7dfceaf4fd39bbcc706e671d3d823f7e6434a5c
font_01_sfnt_off00009c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C3D 5344 bytes
SHA-256: 71fc3e941232f5e28241445af473a76167902af5591f27f7f8a9faa4a54f03e8
font_02_sfnt_off0000ae62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE62 14872 bytes
SHA-256: bdbc986bc9ac1f4a4367e72d1ebbb6424fe7e728f8d261c7e7955763eb9790c5
font_03_sfnt_off0000dd49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD49 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3