Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5db8a9664a2de02…

MALICIOUS

PDF

37.3 KB Created: 2020-11-02 08:44:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 250553f0af98a6d6d168280ae5f38ea0 SHA-1: 73f4e3573271af1abcdb35cfe38b1299840bf7a6 SHA-256: c5db8a9664a2de02a601eb8cc6095fbfe5686b46acb2bdaf3bfbcde3b91d784f
184 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.
  • 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.
  • 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=amish%20bakery%20mio%20michigan In PDF document text
    • https://rizulibix.weebly.com/uploads/1/3/4/3/134358491/dekita.pdfIn PDF document text
    • https://terarawuterojuz.weebly.com/uploads/1/3/0/7/130739827/vuluzarik-nunakaf-tejapirofog.pdfIn PDF document text
    • https://govumubi.weebly.com/uploads/1/3/4/3/134349805/venarebepus-lawimakurawelap-wovuxuniliwif-mokadudu.pdfIn PDF document text
    • https://xulavuxedipi.weebly.com/uploads/1/3/4/0/134017657/sudijanenoxivupe.pdfIn PDF document text
    • https://vidojibirulon.weebly.com/uploads/1/3/1/0/131070792/3757905.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/dc30e00f25d.pdfIn PDF document text
    • https://faxufoxexukixel.weebly.com/uploads/1/3/4/4/134455740/4a1cfe22071b1aa.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/dilujekup.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448129/normal_5f9f5e3d70585.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/264ec118b04568a.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/dcfa4214ba8d2d9.pdfIn 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/73c60869-5601-49ed-96e8-6e3a8bc7ff74/banomudulakuwezon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eeff4d09-8f04-406b-9067-2b265462d00a/chrissy_teigen_cookbook.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_off000053dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53DD 5476 bytes
SHA-256: 8b4937d4804c1ca95c36f6f5a56e94c37d21381762a44c2907c458ede38a6a35
font_01_sfnt_off0000665f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x665F 10108 bytes
SHA-256: f542fbf13d46b6ee4a0984fe7b02ddda51bac37a895ba03e42f47280699cc8c3

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