Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea2d39c7e364fb62…

MALICIOUS

PDF

42.8 KB Created: 2020-10-16 14:34:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f8a66ce1eae6d4db6cd09ec276eba180 SHA-1: eda21e6ada2d57fe2de2f67437011860eef5a8e1 SHA-256: ea2d39c7e364fb62deb5bf686ca5e507c2ffb5ff29321fc618b31872e75599f7
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=evaluation+a+systematic+approach+rossi+pdf In PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/xenemavurinap_jokepirewiteda_fijalezej_gemewije.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/145769.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/3a6af17.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/demajidexopovimonit.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/menedo-fodizelusekom.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/3731638.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/4465468.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/patevenebepil_fugape_rojoxirukali_gabixosogagi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0468/8320/9373/files/e-fly_nova_max_prime_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/first_source_llc_auction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0691/8557/files/ripezakadusokixoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0001/1173/files/university_of_arizona_colors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5126/0836/files/jagokiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5727/3768/files/stickman_rpg_unblocked_66.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7fb18db-bd43-41d4-80bf-5e2c40506de1/27014580614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/470ba99a-f1e5-424d-b104-52fd357b62cd/35502491664.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_off00006803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6803 5516 bytes
SHA-256: 978adbf30e334a23e06cb03460da8ff36f939470805803413f2dd5165d951fc7
font_01_sfnt_off00007aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA3 10204 bytes
SHA-256: 8aa84aeb6fc89314ab4ffce580e76ce2fa21e50b40d04fdcc18c81802ca5dca0

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