Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8b9bbe86fd153e…

MALICIOUS

PDF

47.8 KB Created: 2020-10-15 15:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 82409071132a56962a04d2c74a627ac2 SHA-1: 36a16b43d4ca3748bf3c44ed69c8ae04dfcb0b25 SHA-256: 5d8b9bbe86fd153ef5a4df9b421b86d956b7573301625beff487b83bd8abf52f
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/wb?keyword=ielts%20liz%20agree%20disagree%20essay%20sample%20answer In PDF document text
    • https://site-1039801.mozfiles.com/files/1039801/20749193090.pdfIn PDF document text
    • https://site-1043893.mozfiles.com/files/1043893/mugujizuvoxeg.pdfIn PDF document text
    • https://site-1042496.mozfiles.com/files/1042496/jilevanuwibatedaram.pdfIn PDF document text
    • https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/02e05.pdfIn PDF document text
    • https://vozutadisifik.weebly.com/uploads/1/3/1/4/131483249/5424780.pdfIn PDF document text
    • https://kuwofepex.weebly.com/uploads/1/3/2/7/132740654/ba462127c3.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/xumawudani-birir-lupodosonoja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369494/normal_5f8805a2b03fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f874a5831a84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f8746a14c291.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f87e26327069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f875194d1903.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/bododuxesotifi-wobavenizegu-doloku-pusodud.pdfIn PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/mogosaboxebagax.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/5614093.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/059d55fbff3.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/4106527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_5f88263f7511b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f871bb211109.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f877e16bbf0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369165/normal_5f87eb32b9c10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f875e9a094da.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/c3194ee5-90e6-4c8d-bcd5-9cad2f1bb5e6/70837429024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e52a94-e744-4e98-b691-0fca51002364/fojiwabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/075a12b1-88a0-4743-aefc-1236286710a6/finipukeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46cc3cbd-489c-4a4c-84b0-b340350125ff/dedijilatuferi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69352631-9146-484a-bf31-cb84f5a32707/94149198251.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_off00007aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AEB 5460 bytes
SHA-256: 33811cebc177f5e80f074d168916eb0455b9c0fe9e40311b12095be19c777374
font_01_sfnt_off00008d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7E 10672 bytes
SHA-256: 6a6e2ba56cbc8cfec2b1d57523d3404de55ad87636c40a1157a090ca7043cb57