Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe6d455a4bd782f…

MALICIOUS

PDF

49.1 KB Created: 2020-10-28 17:40:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 73b00c05b44d275fc5dd6baa06ecb89e SHA-1: db80176fa312d018e0e438259e1ba6e60327af6d SHA-256: 0fe6d455a4bd782fdf7ede38e8795ec720c699c52dbc6a86b27fd44097500fbd
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://ttraff.me/123?keyword=monster+discussion+questions+and+answers In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/baputedev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_5f932592bbed9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380230/normal_5f8aacd7be129.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/kezonezabam.pdfIn PDF document text
    • https://detopeda.weebly.com/uploads/1/3/4/3/134305225/zurinevaniwizep.pdfIn PDF document text
    • https://jedunaxalow.weebly.com/uploads/1/3/1/6/131606453/xedizar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368245/normal_5f8fe601ef783.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_5f8cea61d04f0.pdfIn PDF document text
    • https://jivetigaforivuj.weebly.com/uploads/1/3/4/3/134350389/neguja_finomurasug_vegitob_sawalodifif.pdfIn PDF document text
    • https://tumovapexawezan.weebly.com/uploads/1/3/1/3/131398362/7805913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f872325386ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369516/normal_5f993ef764942.pdfIn PDF document text
    • https://bagexefegaluja.weebly.com/uploads/1/3/4/3/134393574/ffd59cd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426941/normal_5f99593d99d24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371505/normal_5f8a68c96e479.pdfIn PDF document text
    • https://viwuwobigoku.weebly.com/uploads/1/3/1/3/131378942/6333148.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/8ce65625-6df9-484a-a6f5-61dec52edb6c/lupew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b7c6b9a-e92e-4a97-9b31-62f7ffc14c42/internetsiz_oyun_indirme_program_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73279ccc-c38a-4b3c-9e4d-f1ba74362db7/jovesidunosamibapugovimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a145cb0-b16a-4be8-8ee0-510818b5d80c/33430567947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1539b43f-c197-4507-9586-f97be13202c0/mr._nobody_poem.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_off00008061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8061 5124 bytes
SHA-256: 5d30d804c731a740ce9f17f3faf00bea36589ad80457ac4d7bee3b179f36e916
font_01_sfnt_off000091f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F3 10776 bytes
SHA-256: edccd7a48a93391152ca040d0185295df9f90e6b226c106a552bdd07f412b4b6

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