Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c36f97136a3809…

MALICIOUS

PDF

43.7 KB Created: 2020-10-17 19:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 3955e3256f463b22a4fd1613c8fb2fe2 SHA-1: 40e3c363ef31e1d8c74015c6be2836ee19ba17b5 SHA-256: e3c36f97136a3809468bb41dbe7b6b430dfe3b6820868431e35b454181400be7
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=unorganized+retail+sector+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_5f8a9c7e292df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f8734cbcb60e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f875740e3057.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f87133aeede1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368496/normal_5f8961a7d5c67.pdfIn PDF document text
    • https://suzokixuvajix.weebly.com/uploads/1/3/0/7/130776208/5b9cdcd9c38d221.pdfIn PDF document text
    • https://gadigode.weebly.com/uploads/1/3/2/6/132680949/6560368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366347/normal_5f884c840df74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f87e33ab9d12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376850/normal_5f8b12ffcda59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367940/normal_5f890abae36f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f872b86da7a6.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/kozigituribu_piwozavami_konoruwanuduwi_zekigugubigu.pdfIn PDF document text
    • https://podesasi.weebly.com/uploads/1/3/1/4/131437149/bazenewet.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/93049f265a0000.pdfIn PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/4645273.pdfIn PDF document text
    • https://waniremupamed.weebly.com/uploads/1/3/1/4/131407535/e958a834.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/58266c0a-8324-49c9-bdc0-63946c1ffacc/wiveguxuvuvewakigewuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ece75230-5f19-4755-8b00-73099ac7dd71/faretamagodebuzodemabop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ea3b5d1-d3a3-4e46-831f-8a782015be95/29886916644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e21c95eb-5315-4d9a-93c8-77c6e90bb0f8/rabezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84876d55-4ae4-4de3-aafe-169492a29954/6149360680.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_off000069de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69DE 5364 bytes
SHA-256: 1b244cf66dd8cc3c72d3f547ab928933a5ea10bea641771518378291c81a93b5
font_01_sfnt_off00007c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C30 11440 bytes
SHA-256: 3c626454db18cdd261f3c9cc111e547306887717732b6e2af0b0e13875d238b4

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