Malicious PDF — malware analysis report

Static analysis result for SHA-256 191105e71c599ad5…

MALICIOUS

PDF

60.0 KB Created: 2020-11-17 20:46:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: b76c1abafe188758e43c3e597685aca7 SHA-1: 046d8b829a61045ece0cde1aad8208334cf8421d SHA-256: 191105e71c599ad56e8b5dbab9191f1ffd6c54497a86b2ea354b66c96877181a
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://ggtraff.ru/strik?utm_term=cells+alive+worksheet+answer+key+pdf In PDF document text
    • https://vogoworelo.weebly.com/uploads/1/3/4/2/134266182/sunaxenipabonig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485445/normal_5fa9fe35bb266.pdfIn PDF document text
    • https://wepubimixojipo.weebly.com/uploads/1/3/4/5/134584552/045c1d5d3e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384167/normal_5faaaadf65aa0.pdfIn PDF document text
    • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/xogazuvazoxo-nufonopisidu-sadisinajudux-wagabilezamuw.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/kasuwevovog/xupigugudibivopedifoluxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02b4d567-fa17-4d9c-bfa1-b7fb4b93e271/pinehurst_lifestyle_crib_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/icao_annex_14_volume_1_7th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f21fefe-be13-43e1-af50-dffe1d6935ed/rodetasidud.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/teladuva.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/excel_spreadsheet_for_gun_inventory.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/lisiniz.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_off0000ad07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD07 5352 bytes
SHA-256: ac376804143e970c092f4d57d34ff2c85eec20ec37ff3c8650c8308ec5a33f03
font_01_sfnt_off0000bf52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF52 10600 bytes
SHA-256: 81e1cf7b40c8ef28194756b8e4696fe1305f92f29deb6dd825b7a0479ac51659

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