Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a48012b7530cbdf…

MALICIOUS

PDF

47.7 KB Created: 2020-10-20 18:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f32621ad77d0f584c1d8b57bc26786b2 SHA-1: 22e147ddf8bc2ba9e9ba59c629f48cc08e3b6993 SHA-256: 5a48012b7530cbdf263ef6991347412b9293c493c74d11ed5357864e6d884ca0
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.ru/123?keyword=consumer+purchase+decision+making+process+pdf In PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/7443628.pdfIn PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/6030170.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/toximerap_lepeni_nokazuzejajevod_mavexuravok.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/9031774.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368949/normal_5f8936c2f3829.pdfIn PDF document text
    • https://zeteparikimifol.weebly.com/uploads/1/3/1/6/131637109/6095284.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/9060165.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/maladafowerosuna.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2064/6048/files/ar_guided_reading_level_conversion_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0472/2763/3829/files/i_love_you_in_bubble_letters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caef405b-499f-4bc3-8643-d553518c3bf3/kerudazukifalebine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8554e268-a018-4f64-babb-495e6d86ba76/satuvonedotenolosoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40cba98f-abbd-4f6d-b8f5-e81844ff8925/lenosagevenabubib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10cda0fa-955d-42b3-8bf5-c4733aedb6bd/nupatiwuburivafuvedura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5f91aaf-a58e-43a1-8f89-a4c1128c6cfd/lionel_richie_my_love.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_off00007d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2A 5508 bytes
SHA-256: 57ba2200b4d74d6b6c60d98b181747cc966c5dc127e8e3ffc4f1979a555acb8e
font_01_sfnt_off00008fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAB 9860 bytes
SHA-256: f8a1038ea80f4fd998d69b9db80cde40a39e591a055166a95487ad870d69d27a

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