Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb1dc9c87f06000…

MALICIOUS

PDF

62.5 KB Created: 2021-03-21 22:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0e2455a95900da43d58fcb01159f2bd0 SHA-1: 588e9d582a5d9e33aa28c0705176fffe89a19769 SHA-256: 1bb1dc9c87f06000787b764e2fcea26ebc0fd8380cb61852230565be6f4a3d1a
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/wix?keyword=bootstrap+file+upload+drag+and+drop PDF link annotation
    • https://cdn.sqhk.co/kulamogo/jDidUcG/76624769820.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452217/normal_6015d3ee2d659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448548/normal_5fd6a61db7dde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365562/normal_5ff22c5b28f26.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/XMNL6je/52316534823.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487918/normal_60149578d0f2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468261/normal_603076a0bc44b.pdfIn PDF document text
    • http://fukazab.mywebcommunity.org/japanese_grammar_exercises.pdfIn PDF document text
    • https://cdn.sqhk.co/buganisazobu/R4hjJgc/wegugelavotezosuzogaref.pdfIn PDF document text
    • http://giwudogor.scienceontheweb.net/afmc_question_paper_2020_bd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://telusomabufa.onlinewebshop.net/how_can_i_have_a_strong_relationship_with_god.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/problemas_de_estadistica_inferencial_prueba_de_hipotesis.pdfIn PDF document text
    • http://bujijawuta.atwebpages.com/anganwadi_application_form_in_tamil.pdfIn PDF document text
    • http://gafodix.myartsonline.com/federal_rules_of_civil_procedure_42.pdfIn PDF document text
    • http://zonurupadul.atwebpages.com/waboraxujojalunivugewoson.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_off0000bb49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB49 5260 bytes
SHA-256: 90bcc202a18c1c8e14981873f60b1c8ebaa5c44a5ebcccefe94ab636f80cc1c6
font_01_sfnt_off0000cd3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD3C 9404 bytes
SHA-256: a85698aefc12b2e72d19c9097175f1b1049db20941d7d8ff8fa50e0dc7e6034f