Malicious PDF — malware analysis report

Static analysis result for SHA-256 8700a1344ce07464…

MALICIOUS

PDF

73.0 KB Created: 2021-02-25 01:07:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 43ea948d96e12821eb22dbcbe7d50d6b SHA-1: d125555c12a5927229cb5a885e297872ed0a7b5b SHA-256: 8700a1344ce07464e81c257b9f3262bfab71c01f31972309ac5f0b73e2c88de6
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://leonvi.ru/award?keyword=how+much+does+it+cost+to+replace+and+engine PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483833/normal_5fdd77181f13f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5ff94791d135d.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/em4hdhh/faith_family_church_fayette_mo.pdfIn PDF document text
    • https://cdn.sqhk.co/bezupidokaz/ZhjaXgd/domino_line_casiopea.pdfIn PDF document text
    • https://cdn.sqhk.co/lukapokobejo/icjclib/5955983295.pdfIn PDF document text
    • https://cdn.sqhk.co/gulizate/sggdheT/gotinivefopikuki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413017/normal_60094c43ec7ef.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuzivo/bxSjhDX/85795955997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384639/normal_60354995e70e5.pdfIn PDF document text
    • https://cdn.sqhk.co/pasepizut/ibFichb/58911243064.pdfIn PDF document text
    • https://cdn.sqhk.co/fenozidu/WhdEM4M/minetest_games_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/JyJwhhv/35311373485.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385207/normal_6036d664228c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401985/normal_60055e1411a52.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/rolefosiju/google_sheets_budget_template_gallery_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/nafotagopukidijex.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/dememeguwidogovagotopexaz.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/loyola_college_application_form_online.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/asp._net_mvc_action_form.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_off0000e16d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE16D 5540 bytes
SHA-256: b1a34d404f6e9ae3c15c9489604a60fe9a97519ff7e7462c69e43c4c0aae6c9e
font_01_sfnt_off0000f429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF429 10048 bytes
SHA-256: 7df723ad0a47483f32cc33589d63cbc6bb005782dd93c8b0a9220abf13dcf45c