Malicious PDF — malware analysis report

Static analysis result for SHA-256 515d25c3eb500adc…

MALICIOUS

PDF

39.8 KB Created: 2020-10-19 21:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 20f72ec9d8130c54a6d4d92228fdd47e SHA-1: e0a392d496137ecd4fc8f1d87326412bfa5c1d3f SHA-256: 515d25c3eb500adcce4a3b2be652d0780c2f599cbc7bf985bf003ace0349116d
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=lenore+walker+the+battered+woman+syndrome+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379219/normal_5f8c503d65340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_5f8da2c7d74e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_5f8c1f22784f4.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/69c6fb656594.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/606b6.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/caa64.pdfIn PDF document text
    • https://wejibuxod.weebly.com/uploads/1/3/0/7/130740202/6090441.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/pogilunul-mexajazo-pawigudazotuba.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/dfe5471fa8.pdfIn PDF document text
    • https://mamunazeve.weebly.com/uploads/1/3/0/8/130814121/3295207.pdfIn PDF document text
    • https://zinikedefi.weebly.com/uploads/1/3/0/7/130740178/bf46d6.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/1cf22.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/3250b5961ed1.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/2bc3ed2a-0377-41d8-ad21-415539b81919/devudixejalizezemadol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58db8f8b-2578-41b9-b627-9199c239339b/redazugi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6533fe4-c4d6-4824-8d5b-564800a3007f/69027194065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a84f125c-b71c-42e6-b802-bbec4a3dd916/koxabakimasar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/746a92a8-3112-4789-a5e2-92a732363e1f/lezuxavobaj.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_off0000594c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x594C 5620 bytes
SHA-256: 0e189fa8d4a6b04eacaf6518fb6cce46593e770ab59edc3f1da6189a4397b093
font_01_sfnt_off00006c54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C54 11268 bytes
SHA-256: a3e6b8b96819b61ade58f79d18bf011da6cfab9dfa64a0142ef7a9ee7b7c140e

Open this report in the interactive analyzer, or submit your own file for analysis.