Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8b3e67494a8e2d…

MALICIOUS

PDF

41.1 KB Created: 2020-10-19 08:36:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: e4c0d8b956caa3d3232c760eb130d02e SHA-1: b70039fe8de00bf6fe40d1542e3b2d2585b3dd00 SHA-256: aa8b3e67494a8e2d3a711fb3f2a6b20193173e08daa56148d4a9dbae1dd36112
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://cctraff.ru/123?keyword=bucher+hydraulic+pump+manual In PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/0b59beb5.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/gawipas-rofurukimo-suzad.pdfIn PDF document text
    • https://daletutanedura.weebly.com/uploads/1/3/1/6/131636587/6956919.pdfIn PDF document text
    • https://lasajiboz.weebly.com/uploads/1/3/1/3/131379041/midefenoruj-soxewomorogafav-nurujufegikodoj.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/powuwenalapufaxusun.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/gafupuzepaxitevero.pdfIn PDF document text
    • https://jasazifo.weebly.com/uploads/1/3/1/4/131437377/vuxaka.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/xizijizi_womexexam_gunatodike.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/vijaguwavubox.pdfIn PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/37bd234c36cce.pdfIn PDF document text
    • https://kanudepu.weebly.com/uploads/1/3/2/7/132740929/8015501.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/d785b41b-25d0-4196-b3a4-0ad976ed9344/77589798744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef48a813-553b-4dcf-98bc-6003ccea4a94/koramoravotomuseti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1349/0846/files/64441812551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4011/8683/files/turn_off_guided_access_without_passcode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7934/6592/files/knights_and_dragons_hack_ios_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f773e54-fa66-4e0a-b739-5fa8410d0ab3/89783370389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4fb8039-eaad-46c7-be58-1a8f03b59837/92783927513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7134b78c-2801-43b8-b6c0-053aed117d42/29542966503.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c0219df-4e00-45ed-bcd7-3b57e99cecd8/nuzoferajipoburuz.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_off00006343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6343 5284 bytes
SHA-256: b98005c23d2b7d52577b7d70728255878096ea6a3633026d9291cde599ec9dce
font_01_sfnt_off0000751d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751D 9920 bytes
SHA-256: 98acc14ac93d03d44595da2cc08f049352072e98ba88d12911030fcce7676a99

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