Malicious PDF — malware analysis report

Static analysis result for SHA-256 59af44670b00f1be…

MALICIOUS

PDF

52.8 KB Created: 2020-10-19 11:26:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-18
MD5: fa067a1bb65be68629101ec8d42429b1 SHA-1: 4075b7536195736eaa6fc250218bff16c4d0cc53 SHA-256: 59af44670b00f1bedafc20f7b1d60aa76edfa84e57453ab80cd2b4926f6d813a
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=dragon+ball+super+mugen+android In PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/2758196.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/jatelu-zukolugaw.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/fopiniz.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/e680c1fcd1be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_5f8cb7488ece4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f872c506b414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f89ede0b8184.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f87472e191c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372740/normal_5f8a8a72bf809.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_5f8d04eac6338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f875f5927044.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384825/normal_5f8c285697bb5.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/7051721.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/4412206.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/d4cca98e-8a5a-4c1c-b511-cc2fdf04bdbf/nodagubij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb4561a-3414-49e4-86b5-533951a74de1/99334673826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1791/6575/files/budget_tool_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/5057/4239/files/70890409366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/8669/4550/files/morning_glory_vegetable.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB5 5788 bytes
SHA-256: e4999349caaaeaff36a93f3e9586d27b73724b2bfb2734c4b9b463db5fd5c0ab
font_01_sfnt_off000083a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A3 5416 bytes
SHA-256: 65dc6f3f32d97ad71be7b96264038ba693ed7c3a8153711395a6c11204376cd5
font_02_sfnt_off000095ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95EA 14660 bytes
SHA-256: 377f72477a345bbc409f385a2c8b83c35ef5eb23baf64df8e872c8742b4a2b2d

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