Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7e95684240c126…

MALICIOUS

PDF

45.6 KB Created: 2020-10-14 23:34:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 689897491de837bbf81a23e7f0888478 SHA-1: e82afbf3351d704d1bfa7d4bf98e996bfc29573c SHA-256: 1d7e95684240c1267a96620ece6944b98e52197b96d111aafb5eb59303c51704
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.club/pify?keyword=dunelm+vertical+blinds+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f8747b4265de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f86fe97257d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365539/normal_5f870cf86c3da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f8760ac1fb59.pdfIn PDF document text
    • https://zuwumepegowivos.weebly.com/uploads/1/3/1/0/131069935/7f60432723aa63d.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/4377800.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fesixukorupu.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/wovexofek.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/f2d5a8f7a66cc.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/da942785a349.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/7613128.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/9051060.pdfIn PDF document text
    • https://fewevivib.weebly.com/uploads/1/3/0/8/130813821/b378b589f5e.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/wuzejorepadako-xawexujo.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/xamok.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/1/0429/4973/8650/files/compass_memorial_hospital.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2054/8758/files/wafokibivuwexarasex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/724feff4-3e3e-44b6-823a-f2e3fceea6dc/donegidejekamolusarid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a81fe6ce-e5e6-4aa5-8e77-7cd4025bd692/43913862764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eff6b6b6-6d74-41c9-b8d3-416a06e828ce/vazuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcdbf45b-85f8-4639-9955-7c63f6ec9189/rusijagoligojen.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_off000074af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74AF 5284 bytes
SHA-256: 21773b6ac046e379e64a272d04602eece9533e134566bf65a2f22b7b7c1595bd
font_01_sfnt_off0000868a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868A 10044 bytes
SHA-256: a39ed8c26db7b43b3ff55bc3c76797543142db096d0a4a417bd0e7a674fd4c9c

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