Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b9ba7cba0fee11…

MALICIOUS

PDF

47.0 KB Created: 2020-10-28 05:26:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 8813c9f4ef0be5cfae552f62875957a7 SHA-1: f64e5c0331be89e9389ab3b2a89c59c9c7622c07 SHA-256: 72b9ba7cba0fee118e1fa1ceace67ae83bd1facf954b84d14100ac0f4a0f4cd4
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/strik?keyword=moto+x3m+unblocked+games+6969 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f998ad8b-6e14-4f85-b32f-cec6540b433c/72061546110.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef895831-7fc2-4309-930d-a5cdb6b97438/lettre_a_un_notaire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3128178e-9de3-492f-93b2-c40a6dcdab8a/90147684745.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1042c9b-bcf9-4f11-bd0a-e934aca6617d/sebetosubafabejage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffc70fa-3f0f-46b0-aa5d-4bd2e9410fa3/xovifotobatonuzemefalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/18183747759.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7816/3363/files/vumadinukik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7658/2560/files/goblin_slayer_light_novel_reddit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/wojuxuboxozidew.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/webevigobagavudebukizaxos.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/9583663646.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/93198171693.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e12bda04-5893-4e97-a7d1-d2fe3f18dc98/labumexopirek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c265065b-2071-4359-af31-b088eea52163/kigulakedusexekixerifogib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f382f22a-a664-474a-9d06-637b6e32430e/gufug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d16eb7a-2b19-4bac-b75a-0688c8e8caff/65338703336.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ed818ad-2802-44de-93fe-c5a39e7e216c/ford_transit_mk6_workshop_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/863488cf-f4c6-4cde-8567-1c3bcf39ede2/fijulisataguja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d360a03-5f18-4ae0-9b8d-05c30dfd0b51/dikoba.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCC 5912 bytes
SHA-256: c92299d897d08f3fc56ff71d2ed51241d65c957fafd7d1cb44d88b893e336bb8
font_01_sfnt_off000073db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DB 10100 bytes
SHA-256: 5550c93a92cb1c586d753ebad06a4d9969da8de16308e697e960bba8a1c36d59
font_02_sfnt_off0000961e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x961E 17052 bytes
SHA-256: 974f36ce309a76e831dcb019738d805407ae00936ae62b5f73401dc28e5f42bf

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