Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e33b607e7a5ed73…

MALICIOUS

PDF

130.1 KB Created: 2020-10-29 13:18:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 3a6ba19928ade5fa760c802a950d420a SHA-1: 01ea4f7eebaf3f4ea31f47f2e660063d29087fdf SHA-256: 4e33b607e7a5ed73161f298085ea8896ad4e2089ff7f71a44f15139890cbb706
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=founders%20of%20psychology%20pdf In PDF document text
    • https://juporolo.weebly.com/uploads/1/3/1/3/131380745/rezuja.pdfIn PDF document text
    • https://vivazezege.weebly.com/uploads/1/3/4/0/134041722/wumewizumun_vijomoxivenatin_wixofuri_figufedok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f890b2b0aa2e.pdfIn PDF document text
    • https://fosogaji.weebly.com/uploads/1/3/1/4/131455903/kawoxizewokebifaz.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/vifew_mumifanitid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388612/normal_5f958e6371a29.pdfIn PDF document text
    • https://lofivate.weebly.com/uploads/1/3/4/3/134307733/mamerod-lesiboxin-dujediwujadigun.pdfIn PDF document text
    • https://futokiwusilo.weebly.com/uploads/1/3/4/4/134458686/4f62764a98af.pdfIn PDF document text
    • https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/gekawaviwulezavu.pdfIn PDF document text
    • https://vudiwajexisipu.weebly.com/uploads/1/3/4/0/134096418/8934385.pdfIn PDF document text
    • https://pasutexovemas.weebly.com/uploads/1/3/0/9/130969198/femewudoravulima.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/xiriruvumojupax.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://uploads.strikinglycdn.com/files/1205c8f1-f2a5-4053-881a-e549f9e0557c/nujuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2478ab67-51a5-4821-adb8-f3c89028ac73/runecaster_s_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/cervical_cancer_screening_guidelines_acog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80e46a23-93c5-4460-b5c8-2ec7b7e1c582/slim_wrap_gnc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac79f3ec-19b0-4102-a78f-94521fe3e043/92357613429.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ef90719-0f38-474d-98e8-eb5d5d2ca0d1/vumomem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c45fa665-2e09-4ece-a743-ede834ccaad7/45752872640.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/numisax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97bf49f8-3d48-4341-862f-823142ef1537/poxesubezezeke.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/affidavit_template_south_africa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/803e41c3-d8b4-49db-abb8-1a233421d9b6/87411427061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7271b8db-359f-4a06-ba00-ba9316488e6b/22916224171.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b03d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B03D 5016 bytes
SHA-256: 7b52b5f1200bf8f75fde293c8fab21b4073f41b36269427243b6484aea489a75
font_01_sfnt_off0001c14a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C14A 14120 bytes
SHA-256: a199beb52f4aedd6a35a3708190b973e195d6793a51355efcf4f260494dfe5bf
font_02_sfnt_off0001ec79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EC79 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd