Malicious PDF — malware analysis report

Static analysis result for SHA-256 6294252270350e28…

MALICIOUS

PDF

37.0 KB Created: 2020-10-10 21:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1525d4a73e52d07413f0090ba941f644 SHA-1: 74f3af9d260dc842c8eab94dd4feec458ca57fc5 SHA-256: 6294252270350e28d4e47ad7b1ac8429e9d0f70ff232391a0957fcfdb345ff6b
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/pify?keyword=wb2x9154+range+igniter+for+ge In PDF document text
    • http://files.durhamwit.org/uploads/1/3/1/4/131453016/kanuzewakegego-mitogizir-xunapuv.pdfIn PDF document text
    • http://files.sheaandaloe.com/uploads/1/3/0/7/130775775/cb0902aa8.pdfIn PDF document text
    • http://gisasoviw.my-riverside-dui-lawyer.com/uploads/1/3/2/6/132681218/3147742.pdfIn PDF document text
    • http://wivev.kiuyanran.com/uploads/1/3/2/3/132303164/1087038.pdfIn PDF document text
    • http://files.theartonym.com/uploads/1/3/1/4/131453695/dimemulewazebuj.pdfIn PDF document text
    • http://files.completetechnologysoftware.com/uploads/1/3/1/0/131069987/9400641.pdfIn PDF document text
    • http://monozuk.mcossfinishes.com/uploads/1/3/1/3/131398020/2119290.pdfIn PDF document text
    • http://bibomakug.jessicaritacco.com/uploads/1/3/1/4/131437130/newoz.pdfIn PDF document text
    • http://files.kreivila.fi/uploads/1/3/1/6/131606188/zunosipuzonaneme.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/e2cac4f7-c00f-4d8e-aaba-20c58161356b/sekorozujezufokufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29d6dcd5-dd9b-4c5f-a4e6-5655266e55f0/42712977011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62b0247d-48b8-4f6a-bb88-3c538d82518c/19855842943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/728e49f9-f73c-4723-9ddc-0a79b64fbd9e/40806925524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f39a14fc-28d7-4de5-8291-a55c9e64fed7/11172627395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6676357-db99-4fd7-bf3f-80ce663cb4a9/sibufovugobuju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88baacc7-f717-413e-adbd-b0f80ee703ae/34672047067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eca83bac-1fc5-4c1c-a1cd-1be2165112e6/266562283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fde193a6-0bd8-4628-bd17-7104200c0f5b/bosunorub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cc57370-39a8-4f4d-8b7e-8b13900ca63b/64098530927.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_off000050f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50F1 5496 bytes
SHA-256: 672795b4d2951430f23639478c4fc18ab212c418e55f48d61fae998208a7a3c2
font_01_sfnt_off000063d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D5 10312 bytes
SHA-256: d69482033e149e13f4fa619727941436886318cd009d0e8844585c50f4138765

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