Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f315402b5b29fd3…

MALICIOUS

PDF

41.6 KB Created: 2020-10-16 07:50:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: ba0d455d4d9872f3d66e980caa591822 SHA-1: 7e706ba2dce7c8c4e3f36ed2382ddd1ef541c5f7 SHA-256: 1f315402b5b29fd33634c9e28c27785ab4cb2bc5c8df6a6d510279341b1ae554
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://gettraff.ru/123?keyword=clothing+vocabulary+worksheet+printable In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f8722f695226.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f87592c1f850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365549/normal_5f871cf1be6ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366010/normal_5f870cc60830b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366003/normal_5f874a129c12d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369522/normal_5f88e6196f332.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/919a8b4c.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/8554420.pdfIn PDF document text
    • https://jivexine.weebly.com/uploads/1/3/1/3/131380908/tazom.pdfIn PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/54f421.pdfIn PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/9cb6251.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/dotun-fibipunenovo-jefalizulozen.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/32e063a95e.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/kukoku.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/3326255.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f891f2aa3f9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f871d30ea398.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/019bc308-72e4-42ac-a78b-c76c766bdcd8/25540908275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ba9f41-278b-4a49-b53b-b4b03aa1bdb5/15472213304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/582df0a6-647d-49c5-8392-57ea0905e45d/7547399530.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6accf9e-000d-4e34-910b-793cfd80b740/49622474488.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_off00006481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6481 5560 bytes
SHA-256: 86b0ae84c07f68a408ecf06ae353d7010989598f0e270478c392079daee50775
font_01_sfnt_off00007774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7774 9820 bytes
SHA-256: 8d9bf4e56a3ed534cfe235563f7fb44ba9007de3502ebfe04d76801747b05225

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