Malicious PDF — malware analysis report

Static analysis result for SHA-256 944666d3e9db18bd…

MALICIOUS

PDF

49.9 KB Created: 2020-10-28 09:20:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 6a007ebe204950052adca24dcf8dee3a SHA-1: 825c36ec62467415c5e8ab0ab911cfeed2ab4298 SHA-256: 944666d3e9db18bd3c1c1968c9a58905e09a94babbd1990bc56b96bed5c3e9d3
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=baba+yaga+movie+cartoon In PDF document text
    • https://mibebedobosuv.weebly.com/uploads/1/3/4/3/134322580/2d64d1.pdfIn PDF document text
    • https://mamotuzukaw.weebly.com/uploads/1/3/4/4/134438076/buzofolagan_narusukokaxemu.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/tugutofanizijaw.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/096fc46624a1.pdfIn PDF document text
    • https://zajuzuvo.weebly.com/uploads/1/3/4/4/134474050/fejelejub.pdfIn PDF document text
    • https://tevitoretej.weebly.com/uploads/1/3/2/6/132680933/c74a8.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/mozes.pdfIn PDF document text
    • https://nujidigazinuwag.weebly.com/uploads/1/3/4/3/134318548/kenutuvivune.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/9897457.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/jolon_koxuzozudanik_makilitinami.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/1d44b872.pdfIn PDF document text
    • https://munujagafunudo.weebly.com/uploads/1/3/0/8/130873736/3018cf8ec66afd1.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/vudodapazepipux_kijemomebegax_velagokotukif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_5f9261bc27bcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368759/normal_5f8ae72fdea11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5f94afb7472e0.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/f6113f32-da34-4be8-b506-7c5cfed759c9/luxotijemudori.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d045ecfa-dc3c-47e3-bb3b-bbea771e62ff/47189634969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ece75230-5f19-4755-8b00-73099ac7dd71/faretamagodebuzodemabop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28c7b56b-0374-4c6e-bf2b-10fc880a76fc/figure_drawing_techniques.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1903dd2-5409-4e71-a91c-4d6e26ca4855/jotiworod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fcabe7d-0464-407b-8fd7-74d944df6c51/45733465147.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53d8901d-3f57-4cff-aaca-2a3f1fef2498/48122703114.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_off0000821e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821E 5260 bytes
SHA-256: f4c7780426331212a24d717f4a6dd12e885775dd94aad3242f4975511f1b6841
font_01_sfnt_off000093fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FD 11700 bytes
SHA-256: 03bb1c48e11eeffdce04fa9df071f7dc083943af7fece44df24d1e14878fcb97

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