Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd745e78a407121b…

MALICIOUS

PDF

72.5 KB Created: 2021-03-06 13:58:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 4b511b05a77c79d3a949e5464912c90d SHA-1: 5005d9b4dde47114af8bc061d3ad88642b016359 SHA-256: cd745e78a407121b0b1e1041b1659ae2fe70fdaa0f452e716ea0bf9f62391d63
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://crophysi.ru/123?utm_term=business+communication+today+10th+edition+pdf+free+download In PDF document text
    • http://alkim.xyz/blade_inductrix_switch_air_rtfd3l83.pdfIn PDF document text
    • http://miwewumexurigan.sportsontheweb.net/fejomunivowawe.pdfIn PDF document text
    • http://passive-income.ru/contact_number_for_book_depositoryd67pq.pdfIn PDF document text
    • http://sabovibin.medianewsonline.com/jumafogagudepedojunupunib.pdfIn PDF document text
    • http://mutujejeturuduf.medianewsonline.com/35746284295.pdfIn PDF document text
    • http://shop-kid-toys.online/international_standards_on_auditing_handbookt2pyx.pdfIn PDF document text
    • http://vurejowug.mypressonline.com/43787172867.pdfIn PDF document text
    • http://geparup.scienceontheweb.net/23464563860.pdfIn PDF document text
    • http://manovina.mypressonline.com/hampton_bay_ceiling_fan_not_spinning_fast.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/nerojetiwiwerodeduxafar.pdfIn PDF document text
    • http://wegolurubakisud.22web.org/fivuwesotoduwonopop.pdfIn PDF document text
    • http://hristogrigorov.com/kawaxujuvorepinodeg852sj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://2cfcb734-ec62-4cd9-b61c-03d4762ad765.filesusr.com/ugd/a891c0_15ba719fa7884edfac91567494b560b3.pdf?index=trueIn PDF document text
    • http://fedatowuka.epizy.com/how_to_bypass_mega._nz_limit.pdfIn PDF document text
    • https://356bbf58-84af-4bff-99a9-d03346e46411.filesusr.com/ugd/b5472a_e0bad48847704d2ba7a85200638d0f27.pdf?index=trueIn PDF document text
    • https://f7e05ffc-afae-4d19-be15-7e9c659e5e5f.filesusr.com/ugd/72f62b_fa5667546cea4dc183e212a7b122de26.pdf?index=trueIn PDF document text
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_3d60eab7164d4bb8b0b0667b33b03809.pdf?index=trueIn PDF document text
    • http://mikijanux.atwebpages.com/49936188453.pdfIn PDF document text
    • https://badbb018-ab4e-499b-b788-960949b82e3d.filesusr.com/ugd/4f4c56_9f560b80179c4a1a96be2b6fec388907.pdf?index=trueIn PDF document text
    • https://78151a86-a557-4e49-81aa-a2539eea45c7.filesusr.com/ugd/204f4f_ffbd9224b08c4b28813f0b187592895e.pdf?index=trueIn PDF document text
    • http://widepidaba.atwebpages.com/icom_ic-v8000_service_manual.pdfIn PDF document text
    • https://24451074-f53b-4065-993c-779ba3957988.filesusr.com/ugd/0ae25f_b58d04674a634b7c93d352c32c4a0e86.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8D 5712 bytes
SHA-256: 5efe1edb0268b6271f74c2395d2162f23c8318ec642c74143cdc078e23b3a381
font_01_sfnt_off0000e0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E1 10808 bytes
SHA-256: cff8f71de83c65291b89cafb6b0d50fdb58eea503805e466facdcb30d039f585
font_02_sfnt_off0001054e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361