Malicious PDF — malware analysis report

Static analysis result for SHA-256 62493d9c631e1e28…

MALICIOUS

PDF

47.5 KB Created: 2020-11-03 18:00:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-28
MD5: 4ec202fb70abd55d93e596ee267ea3dc SHA-1: c0457a4a6e639b2e2dbeb0fd690c7847ba2abc3b SHA-256: 62493d9c631e1e28de776aef5480b9e0f8563ea254618512d2ed7913e8d62b05
194 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.
  • 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.
  • 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://cctraff.ru/wb?keyword=how%20to%20make%20book%20app%20in%20android%20studio In PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/gebisuz.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/7775416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394073/normal_5f91d6757cd2a.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007ca4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007ca4.bin)
    • https://s3.amazonaws.com/zerepuzuze/jovuketetajuxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd90abb2-f9c0-43a0-bbfc-d9147dd830b5/picostation_m2_hp_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/120c317e-5d17-4881-b26a-03dc57af97f4/14688333117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c726f45-2a8c-4e27-967a-e500901d23ab/vulonalonetukemorixedaw.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/bogisegu.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/tyson_percy_jackson_age.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/xewurokugeno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd915b5b-4f58-48aa-a72a-0c450c9fb11f/kisixifunuxaku.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/encyclopdie_des_plantes_mdicinales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a507302-cda2-41af-830d-367df603018a/webkinz_clothing_machine_recipes_fairy_princess_ball_gown.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/torewomokojozovomulujupen.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 extracted file (font_00_sfnt_off00007ca4.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA4 5328 bytes
SHA-256: ace9603cd92f1455426ca37aae1cd7d43420069ca18124e244843f44c323d09c
font_01_sfnt_off00008ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAD 10304 bytes
SHA-256: 96184a51797ecbff02e979bf51bf7c1bb55c272a4b6dee8bda9083e083ed591b

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