Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6eb50a6c977469…

MALICIOUS

PDF

54.4 KB Created: 2020-10-18 01:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 00771ff28e85a90c087e647b9ae0186f SHA-1: 6108293bae518454593d91984cb714bfd9f14ea9 SHA-256: 2b6eb50a6c977469018ffbf643b5bad6a6f6b1f5bf551d935c240b076391b9c3
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://gettraff.ru/123?keyword=chretien+de+troyes+pdf In PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/d7a40.pdfIn PDF document text
    • https://pujatimosu.weebly.com/uploads/1/3/2/6/132681823/newuke.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/3373854.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/zedazamirube.pdfIn PDF document text
    • https://zekuwatifakaxi.weebly.com/uploads/1/3/2/8/132815855/8c1efcdda.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/4726015.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/82b21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f8935c6dfd80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375344/normal_5f8a7e517f4ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f892b00c2558.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f8b65158b742.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369665/normal_5f882707b3f39.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/wageseperexejekalux.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/kumulalisowurur.pdfIn PDF document text
    • https://mogijoduvide.weebly.com/uploads/1/3/0/8/130814471/lutuzire-bisadogapo-kukazijo.pdfIn PDF document text
    • https://tugajepefur.weebly.com/uploads/1/3/1/4/131453805/5dacd.pdfIn PDF document text
    • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/tejareziwa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aab504f-f019-4f6a-b819-e3f01f7867da/sufopasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aed9788-f880-4bcf-b28f-efb1fc5ce61d/finding_nemo_full_movie_watch_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7690a785-5a73-40da-9af9-259e287b83ab/dagosenoragowonevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d773d9-983a-49a9-bf2c-7b0d8db143a4/vivowebatiwategogazazesar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/599e956d-7424-47c4-8f00-59c886a7be05/wavuduzegorugure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742e996f-ff3b-4945-b1f5-ae50e2a249cb/35484054278.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dab7868c-7021-4295-8e93-3c32bd6929d8/83011887736.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5889679a-f394-4951-896f-70ee503377a0/lobivaxe.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_off000091a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A3 4896 bytes
SHA-256: 783fe2b79ed49e0cca7d6fabcf1e319c94cc0d37c10fdb633659e74578f5128a
font_01_sfnt_off0000a24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA24C 13084 bytes
SHA-256: 4123daeff0bcad885cc67f6effca71911458297781f0be0c7d8e0f5b49e537d6