Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c0ee4875d36afa…

MALICIOUS

PDF

35.8 KB Created: 2020-11-09 12:40:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b29aa2d522ed318b928d8fb9da265480 SHA-1: 421a07a1b60278d165ecf44def6701a5ad396170 SHA-256: 41c0ee4875d36afac3e4b2065dcc86e74d92c9c908e8eb62e8361e197cbe81c7
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://traffking.ru/aws?keyword=letra+maria+reina+de+la+paz In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374699/normal_5fa7fb4cb5ca5.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/tigav-keponomisisize-nuwimulaxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472763/normal_5fa7986acc2c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_5f95ecee052ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374682/normal_5fa5482deae17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384482/normal_5f8eb6fd56392.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366969/normal_5f966efa9852d.pdfIn PDF document text
    • https://romovemesokawaj.weebly.com/uploads/1/3/4/4/134479736/9416008.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/dafijogisok-pupilolifuxil-lorojuzej-sopuvadupikabox.pdfIn PDF document text
    • https://xezefamije.weebly.com/uploads/1/3/4/3/134352880/sudipaliwuke_vasenezesebuj_nogaga_wisukoxozif.pdfIn PDF document text
    • https://mujetuzavos.weebly.com/uploads/1/3/4/2/134266282/kesugazezovif-tipipiti-pexibitigimi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375531/normal_5fa11e11912fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f887c533f539.pdfIn PDF document text
    • https://kunimagim.weebly.com/uploads/1/3/4/6/134608209/2888097.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/69f58580-7e86-485b-a851-d9017a7ee7a9/dusodubaxitesudujinami.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_off00004e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E73 4916 bytes
SHA-256: 6a4c6af905a4cce98ffcdfaf2ba2d9751de71c7d09e36e0add84d6db5b174dd8
font_01_sfnt_off00005f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1F 10956 bytes
SHA-256: 0fa520ee19906085171d7c34408fbda899b41c6e6ff5a603e767c1a62d8694cc

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