Malicious PDF — malware analysis report

Static analysis result for SHA-256 7824bffc0c7c3d7d…

MALICIOUS

PDF

44.8 KB Created: 2020-10-15 03:33:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-16
MD5: 578a7b3a286f9d92632c1ced61b218af SHA-1: a22bcf3a21cf885bffb1b4a95a8948a3026f8312 SHA-256: 7824bffc0c7c3d7d236745dc564893735e890aaabd387ff3660f61d99edb1619
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/strik?keyword=introduction+to+statistics+in+psychology+howitt+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5f878c68a861c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f870ca1ece07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f8787b7d5854.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/3d4d22.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/susino.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/gikunovesizaf_najitimewosop_fexok.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/jibepare-vudaramuzi-refirezagulele.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/d1b716f8e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f87703380bec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366032/normal_5f8743fe5e4df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f876a1ba2eff.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/1/0498/7364/9822/files/princeton_computer_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2683/1784/files/selukojufomezadiworexovak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9343/5589/files/wawumitotema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5df2a453-d1f9-4da2-a24a-39c0caceec38/49425880447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1854db59-5315-4b3f-b24a-f2ee99aa3bb3/20641462409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b559032b-b1c1-4d08-b410-4c89c4384563/43864012905.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aca9e8f-1d10-4fbf-b1d5-3f1c78a9e30c/25790529801.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1beb8582-1d3f-403d-ab92-571f69521592/kiwubodoxivufeverufubitet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61ea7c3e-fc06-4cf5-b8e2-5f788e774f03/firijakuxir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9751ed9f-fd9a-4349-9036-3dbfe96dd659/77674206212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f0ab26-64e6-4634-9d15-d25548289881/42999039096.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_off00006d63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D63 5548 bytes
SHA-256: 49c96924ae23ab4170e6c86ea2866c7fad14ea3462066d216a427d7d67abd350
font_01_sfnt_off00008055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8055 10380 bytes
SHA-256: ed80ecc9cc0d477d60a4732b8691a92d1c57ac210fda8244bd3b8c055a4a7b1d

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