Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4b827512b96cee…

MALICIOUS

PDF

71.1 KB Created: 2021-01-29 04:06:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 14b3f34fceffb4717633feeab3f6adb4 SHA-1: b865052730ad88d47c26da9c2288da8c60df3577 SHA-256: db4b827512b96ceea89651472156539baeb75d1994fd4a92226836277fe70496
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/wb?keyword=pounds%20to%20dollars%20conversion%20historical PDF link annotation
    • https://bezulagoxirupaz.weebly.com/uploads/1/3/5/3/135347250/8495182.pdfIn PDF document text
    • http://urro-hu.com/10064544100hckj9.pdfIn PDF document text
    • http://myyshooop224.site/npv_ti-_84tivga.pdfIn PDF document text
    • https://samituvejasuw.weebly.com/uploads/1/3/1/4/131406365/1696817.pdfIn PDF document text
    • http://helplnstagramoffice.com/x_core_galactic_plague_apk3bcho.pdfIn PDF document text
    • http://tosety.xyz/mario_bunge_epistemologia_librofe4va.pdfIn PDF document text
    • http://prizinsta365.online/cuaderno_de_trabajo_de_matematicas_6y6qy5.pdfIn PDF document text
    • http://copytoshka.ru/getasuvogufudonezomexeso5dpwz.pdfIn PDF document text
    • https://pamaridefudeluz.weebly.com/uploads/1/3/0/7/130776324/viwifubij_sotuj_livow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425784/normal_5fd088daab9be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446270/normal_5fe78056dc584.pdfIn PDF document text
    • http://vash-fasad.live/rawunotewewex2cvug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481663/normal_600d6f2e9a923.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377704/normal_5fefde59026d4.pdfIn PDF document text
    • http://ig-objectionform.com/29346040648lrdml.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD772 5088 bytes
SHA-256: 704a20563359954c9ab28734bc5a338fe3a3841f958b11eac41da6039ad39491
font_01_sfnt_off0000e8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C0 11284 bytes
SHA-256: 228a890dbd68a9d5da1524c10773513f8183f7a1a5b927b497e5abb1f5865d88