Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b34061e3b17c97…

MALICIOUS

PDF

86.6 KB Created: 2022-05-19 22:39:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-06
MD5: 54bbfee6483ee7b976e4fb40f7ba05aa SHA-1: 5d26bed2bf63af2404d292dedc04c776475bcb7d SHA-256: a8b34061e3b17c978ecd5c075846eeb6db3ad8cea76945f7726ea1ffe863fb92
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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
  • 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.
  • 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://norin.co.za/YmrXLWy8?keyword=alpha%20decay%20theory%20pdf%20file%20download%20windows%2010%20full PDF link annotation
    • http://www.aqua-systems.com.tw/ckeditor/kcfinder/upload/files/rukebitemogipopifefore.pdfIn PDF document text
    • https://www.giromarilia.com.br/plugins/kcfinder/upload/files/xituf.pdfIn PDF document text
    • http://thanhlamresort.vn/wp-content/plugins/formcraft/file-upload/server/content/files/16260130abbd1f---joboropezox.pdfIn PDF document text
    • https://bikasiju.weebly.com/uploads/1/3/4/3/134385723/4f9e07.pdfIn PDF document text
    • https://zazetafulunemu.weebly.com/uploads/1/3/4/5/134599809/9895091.pdfIn PDF document text
    • https://jasiximipiz.weebly.com/uploads/1/3/1/4/131453573/xabepowibeme.pdfIn PDF document text
    • https://juwomazitebuden.weebly.com/uploads/1/3/1/4/131414743/bebak.pdfIn PDF document text
    • https://laxorugosiv.weebly.com/uploads/1/4/1/3/141396785/zebebiralag_zibosed.pdfIn PDF document text
    • https://tunhuaduytan.com/upload/userfiles/files/16810087671.pdfIn PDF document text
    • http://malifer.hu/upload/file/16584527369.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/8048768670.pdfIn PDF document text
    • https://studiecarriere.it/uploads/file/timugimijipodubajusurozu.pdfIn PDF document text
    • https://naxulukituno.weebly.com/uploads/1/3/4/8/134879135/f16c7.pdfIn PDF document text
    • https://glaskunstcentrum.nl/images/file/dikulafavozakugu.pdfIn PDF document text
    • https://cartonwrappingmachine.com/userfiles/file/ketukuzof.pdfIn PDF document text
    • https://pezusipadivo.weebly.com/uploads/1/3/2/3/132303316/2591125.pdfIn PDF document text
    • https://wumigativagulam.weebly.com/uploads/1/3/1/6/131637174/d7610.pdfIn PDF document text
    • https://buzuravuk.weebly.com/uploads/1/3/6/0/136097113/zodegofenawufuj.pdfIn PDF document text
    • http://arborspringsforestry.com/img/files/45238632545.pdfIn PDF document text
    • https://xuxedujuwa.weebly.com/uploads/1/3/5/3/135345360/tavodojovuj.pdfIn PDF document text
    • https://bofujajaba.weebly.com/uploads/1/4/1/5/141516826/6860466.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000d34f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d34f.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d34f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34F 16168 bytes
SHA-256: 1cfb00680a8a18ef5d5af493cc5b57cfe410abeba37087ee2ecd799c98b61e68
font_01_sfnt_off0000e8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8EC 11172 bytes
SHA-256: 37681bcf61eab55dabbed165d4c2aac80365180660d4b37735489f81b03806e5
font_02_sfnt_off00010325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10325 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00011b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B37 17820 bytes
SHA-256: 81f88a8a2c1057cc2a7a14599d3ab44384a020b83d3c6c41912b5cf5403bd534