Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c4fbc26b97285c2…

MALICIOUS

PDF

38.0 KB Created: 2020-10-16 23:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4e0e75eb01d8f1873fe6ce67fac71e78 SHA-1: 1bbf4cfe5fec75a9bfaf236c25afafb04c111d0d SHA-256: 5c4fbc26b97285c21007d6daa3902eb8a672e43e838cc4cb79ee7fc6e8e65d29
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=manual+de+hec+ras+en+espa%25C3%25B1ol+pdf In PDF document text
    • https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/4021379.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/6a5aeb6b3a.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/keripabomodepedi.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/40ddfa4d7f4e3e.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/gokokufoledanusupo.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/zikarab.pdfIn PDF document text
    • https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/6412489.pdfIn PDF document text
    • https://zeginuvo.weebly.com/uploads/1/3/0/7/130775519/1767761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f881f33f14f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8708e626212.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366340/normal_5f8726bbdd843.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366000/normal_5f870f1ccedc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f8962d1b4323.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/6fabda43-9f64-4379-a9bc-6bf1fde167ae/21594819696.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/060af316-d565-4800-b9b7-2ac60462a46f/nafosafekakibav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15ec1b57-5695-4223-bfbd-a5ed528e8a14/59337109504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b9839d3-ca57-4a2f-8bdd-489923bc239e/meduradi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0683/2024/files/centos_7.1_minimal_iso_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3972/6487/files/gabege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5767/5421/files/blues_solo_tabs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5269/9300/files/bopamifem.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 8

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_off000053b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B6 5460 bytes
SHA-256: 85c2078c890315447099906bd4c5b1783c0c9360c73571530d3f2819093ef4fc
font_01_sfnt_off000065f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F8 10660 bytes
SHA-256: 901b67aba44fe077adeb4ebf4e2a3dc614b68f8f77162fe2f5677ba439116555

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