Malicious PDF — malware analysis report

Static analysis result for SHA-256 4588dc1295bb9036…

MALICIOUS

PDF

119.1 KB Created: 2021-04-18 20:18:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 108ebd282d5e5588c4f882aa8af08992 SHA-1: 640abfda220b3656483386d139be002d963d1921 SHA-256: 4588dc1295bb9036880ad51a8967a85f67f528b4bc479f4564b4167bd09c7eaf
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://kuzutuzo.ru/strik?utm_term=aristotle+nicomachean+ethics+summary+book+3 PDF link annotation
    • http://abistrans.ru/how_to_do_a_border_on_a_crochet_baby_blanketv3zvd.pdfIn PDF document text
    • http://mon-cmso.best/3.32_determine_the_indices_for_the_directions_shown_in_the_following_cubic_unit_cellfb4yl.pdfIn PDF document text
    • http://vivubowi.getenjoyment.net/momuxetoxunuravugobosiz.pdfIn PDF document text
    • http://copyright-central-media.com/pl_sql_substr_instr_examplesjfzzo.pdfIn PDF document text
    • http://kengoru.space/pikogupaxelevolubelovopetd2zfs.pdfIn PDF document text
    • http://shop-kid-toys.online/online_easy_recharge_vodafone_prepaid_mobilel0jgg.pdfIn PDF document text
    • http://itawegan.fun/mini_usb_power_wiring_diagrammkj8w.pdfIn PDF document text
    • http://judupebe.getenjoyment.net/gumemeroditawudoninozuti.pdfIn PDF document text
    • http://kukushpa.fun/xesiralufoxu6eih9.pdfIn PDF document text
    • http://xidufefonudug.sportsontheweb.net/19607510401.pdfIn PDF document text
    • http://oneshops.space/19441989878aq4im.pdfIn PDF document text
    • http://zubiki.top/89909399592jpti4.pdfIn PDF document text
    • http://tulusujubige.mygamesonline.org/17017953309.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/fixararololu/what_was_israel_called_in_biblical_times.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/ffxiv_anima_weapon_light_guide.pdfIn PDF document text
    • http://vovojoj.atwebpages.com/50206113127.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/replace_battery_casio_g_shock_solar.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/kexaxubivorijena.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/civilian_equivalent_to_military_rank_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/10839285570.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/37979943930.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/vampire_diaries_cast_season_1_episode_19.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/share_google_calendar_with_others_android.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_off000196e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x196E3 5496 bytes
SHA-256: 2588e1f8348ade3e460f41e8e748308ca1b49739d834756db162720bf027e2a1
font_01_sfnt_off0001a971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A971 10832 bytes
SHA-256: ba1df287b45934a4cb193b17d2d0d160f15ad17200fc4896aaa3e2fb66f496f8