Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8446d137e78e4c6…

MALICIOUS

PDF

46.7 KB Created: 2020-10-17 12:16:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: c3715cbadc2ce5efc52db51f6c491c0c SHA-1: d392932820cb37226319c2a7ac31e5fc932f5419 SHA-256: a8446d137e78e4c695f3c1272a57ddc75cf6ff0d8a2a68dac748e8b03f930a71
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://ggtraff.ru/123?keyword=denzel+washington+quotes+pdf In PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/b6077b58ea7457.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/dosedaxejovadun-zafede.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/703ec170.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367310/normal_5f8753eedb9d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378151/normal_5f89eedd812bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f8718f796fc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365562/normal_5f8a82ddcb839.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/batagebexi.pdfIn PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/1079137.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/912726.pdfIn PDF document text
    • https://gutugifowofe.weebly.com/uploads/1/3/1/6/131606479/zanarutoverurinewa.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/dujogibaw-xovozakarup.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/dekefomivupe-kovak-talajonipa-fedebiraroz.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/tojajixubunigerus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3366/4922/files/basic_number_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5511/2096/files/city_of_dallas_permits_department.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2899/9065/files/81887453870.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000795a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795A 5472 bytes
SHA-256: 6a299a4ef45fd7b661ee8db70b6363d49e91276275e5f7cf93ee5975cf41d6c1
font_01_sfnt_off00008c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C10 9848 bytes
SHA-256: 6b666cdc5abf06c777556f61573d5b38a1279feab6ad2b9c3ccbd5e2aa26f7cd

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