Malicious PDF — malware analysis report

Static analysis result for SHA-256 445de057cca82447…

MALICIOUS

PDF

44.4 KB Created: 2020-10-14 00:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-10
MD5: a4d062708b95b46221ed6c2ae5e8f776 SHA-1: 4cff80daa4db51ae099b0dcfef794712afbbb434 SHA-256: 445de057cca824471b4bcee87f70c0fcbb425c588d92154b1176f6799bdd3b59
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=candy+crush+saga+android+game+download In PDF document text
    • https://site-1038820.mozfiles.com/files/1038820/donabaw.pdfIn PDF document text
    • https://site-1048292.mozfiles.com/files/1048292/98963584709.pdfIn PDF document text
    • https://site-1036692.mozfiles.com/files/1036692/70926272502.pdfIn PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/kifoxotuxesovakelefuveto.pdfIn PDF document text
    • https://site-1038679.mozfiles.com/files/1038679/79251660834.pdfIn PDF document text
    • https://site-1042017.mozfiles.com/files/1042017/kasunetu.pdfIn PDF document text
    • https://site-1039886.mozfiles.com/files/1039886/72164016194.pdfIn PDF document text
    • https://site-1040084.mozfiles.com/files/1040084/6757648820.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/12b57d23-99cb-4894-87f0-988893cc394f/nusapovuzowoberuxajonip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ed60192-3c16-4f52-a78d-0ac91287bbe6/28091913371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a31bbc0-2f3a-45b4-a5c0-ed28abbfbd60/zilaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ee2f92-8d54-4932-a2e5-d2a7928e3238/bavomawozozifimisekurive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f361d027-2865-4866-9096-198502382bac/69126380275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/2501989176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4671/7608/files/manchester_middle_school_chesterfield.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1114/3842/files/93065478915.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_off00006edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDC 5452 bytes
SHA-256: 05292f32491096e5f1d567bca507aac2bc93a5b18636d21f58e78f8c1d0bf74a
font_01_sfnt_off0000814d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x814D 10320 bytes
SHA-256: bd718b5ef5f28e618d6cb355a4c1342b60ae4ab1649f1adcd784cf22969be777

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