Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd164bdbfe76b28…

MALICIOUS

PDF

63.6 KB Created: 2020-10-16 03:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 380b65059531f6040f868fc244647c75 SHA-1: 584bbb45b149977eca55a64a734cf6a072a7e80a SHA-256: 3dd164bdbfe76b287aa62620e891144fe52e3588da2b58391c03b08d9c617b30
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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=geopolymer+concrete+project+report+pdf In PDF document text
    • https://site-1036867.mozfiles.com/files/1036867/12874381046.pdfIn PDF document text
    • https://site-1041486.mozfiles.com/files/1041486/31750896015.pdfIn PDF document text
    • https://site-1048208.mozfiles.com/files/1048208/kelejukajobu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372399/normal_5f8886798cb4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_5f88d0f46c499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_5f872536a5ca9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_5f87e5bfee105.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/146d032f56d235.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/fagozuzir_ledek.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/dujogibaw-xovozakarup.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/c63ac1bc-e1cd-49a8-8dbe-17363f155f90/24962751536.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e1a3a4-56bc-4111-a5d1-471928e3adfa/87229685709.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d05f7d-3565-4af6-8217-607de2cb5c9e/wuwik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75c29340-c3ce-44ca-94a2-f57b36babbb0/92866769027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfc6f95a-3a60-4286-8088-ac61aaf725d3/11497683667.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38c85feb-1e72-46a9-ab6c-56d8910832f2/27755449119.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd79ba52-a811-47d8-9632-7e7b45318be2/53143683789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0198/6723/files/mopojeguneber.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3454/8645/files/preterm_labour_green_top_guidelines.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_off0000bb71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB71 5120 bytes
SHA-256: 809f43be5000151d55d850c8dd0f6044c4291cd553abdfe560a81156dba689e1
font_01_sfnt_off0000ccd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD8 10512 bytes
SHA-256: 9e8af028cad639c25f73fc1adea902d0850453ef273e234e11536f0c771598b4

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