Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a9182074044b772…

MALICIOUS

PDF

63.7 KB Created: 2021-03-05 05:15:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9edd26485472c6a74cf9de7be8a8d609 SHA-1: 49fb5efded01582904ded4f108b2e9dac18d46e7 SHA-256: 2a9182074044b772d30577b4c6114484415519b00a938822e198e972f9c015f9
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/123?utm_term=what+goes+well+with+navy+blue+pants PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368976/normal_60258df65501d.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/gej1T1K/cultist_simulator_rites.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/juduwisimikavemuz.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/hgyhjii/lefosupamugukozuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460981/normal_60220a404a2e9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pisedij/dalimaseliseziweki.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/japanese_tattoo_art_books_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b46c6203-26bc-459c-a40e-f38f168a7f26/mipuriduresiferobadu.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/verbos_en_ingles_conjugados.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/sodarerijitiwipotu.pdfIn PDF document text
    • https://c3438639-6a75-4920-aa4f-d1e0b619354f.filesusr.com/ugd/3be3a7_a1c7b952e1114e34af7f4438b6dcc3b1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/adnexal_masses_us_characterization_and_reporting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a8d56e-04f4-493d-9ed4-ace06209cb06/harry_potter_book_order_release_date.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/gedonupatadezosetuvus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83b6d3b4-0de1-4f42-90f4-58cc007e6625/felamofebenanijos.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/puvetakaza.pdfIn PDF document text
    • https://4bd9ed84-c80b-4837-bb2f-b1353ebfd8aa.filesusr.com/ugd/5a1791_a668d0391bce48aa9c65113013ce17ef.pdf?index=trueIn PDF document text
    • https://4590046d-f0a9-4171-b8a0-56ff8c1fe63c.filesusr.com/ugd/0bfb20_196571d0d1a54fd8ba8934b69448b426.pdf?index=trueIn 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_off0000bf96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF96 5392 bytes
SHA-256: d153d162a1eea0aaaa3a9a5d84604a73532e74890b267134b20aa1cc4f861def
font_01_sfnt_off0000d20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20D 9284 bytes
SHA-256: 68f90c44da7df0a2d7a39674cef302606e3ab0c32706cd55534422c26af9bb4c

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