Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453a5a5b89cd164…

MALICIOUS

PDF

43.2 KB Created: 2020-10-05 05:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-07
MD5: 32cecd6516730d97bac3ff03fe506f80 SHA-1: dcf9c816d4a1f04b46a34f78003ddec4fde79093 SHA-256: 4453a5a5b89cd16453d150dc2be43c59be6aaca26bc905a8bd6728c05ca57e01
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://gettraff.ru/strik?keyword=dividing+fractions+worksheets+grade+6+pdf In PDF document text
    • https://site-1043377.mozfiles.com/files/1043377/wafegomupa.pdfIn PDF document text
    • https://site-1037091.mozfiles.com/files/1037091/newozopazikilupisuxuzule.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/76507530882.pdfIn PDF document text
    • http://files.deltronenergy.com/uploads/1/3/1/1/131164364/kapaxofibig.pdfIn PDF document text
    • http://files.astriddrageset.com/uploads/1/3/1/4/131452836/9792210.pdfIn PDF document text
    • http://dagos.rfcaffreyart.com/uploads/1/3/0/9/130969279/kuduz.pdfIn PDF document text
    • http://files.talkingsimian.com/uploads/1/3/1/4/131483386/9707963.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/1/0431/8160/5018/files/badisomitefej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9636/2148/files/85368675230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e9f8355-649e-4f92-949c-48ce3ef2aa8a/gikin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/806da9c7-0793-49c2-bceb-bf32b52ff65c/vikewusorikugujegikafo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ea5855b-0f9c-4c79-8136-351cf6430393/37270383831.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2198c68a-0229-4798-95c5-f1e69553fc85/9570539375.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_off00006b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B53 5752 bytes
SHA-256: 0438828988c1d6da2f22abcb09a02cd15a5d071857d245d63d8e5246af0099dd
font_01_sfnt_off00007f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0B 9700 bytes
SHA-256: 838dc251bd4d2f1751e5fdc761a69734a0b0bd72ba93ef98f2846958f0132208

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