Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aff3fa35a0de2ff…

MALICIOUS

PDF

49.8 KB Created: 2020-10-29 17:38:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 2b15ddd2fe07be403ae300086d4cc266 SHA-1: ed8f69d0c58b24ef6bdd6b25dc30221bb82b9058 SHA-256: 4aff3fa35a0de2ffe3f5ebc1514d35797494100eaf6e53aa4a8e7f9524ab52cb
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=geometry%20worksheet%209.7%20volume%20of%20pyramids%20and%20cones%20answer%20key In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374175/normal_5f8be074d33b7.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/890c03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388181/normal_5f95dcb3036ae.pdfIn PDF document text
    • https://xikoroto.weebly.com/uploads/1/3/4/3/134338579/e0662049b918c1.pdfIn PDF document text
    • https://gujibimusexuwub.weebly.com/uploads/1/3/4/0/134042380/786a65782.pdfIn PDF document text
    • https://wipomozexabezi.weebly.com/uploads/1/3/0/7/130776841/2386540.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5f8937128a626.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/kilebowar.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/7a187234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_5f961296f0e27.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/ee736b022.pdfIn PDF document text
    • https://sixonawujow.weebly.com/uploads/1/3/4/3/134369174/kavaluzevaxigub_niluvowike_lagemowaj_gixesi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379731/normal_5f8f83e038893.pdfIn PDF document text
    • https://mikudone.weebly.com/uploads/1/3/4/3/134370159/sobaxorubugozakifom.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/247e64c2-042a-409c-bd05-9fe80826eb47/metoriwezupekozozakowafem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d7b6e2a-c849-4638-8403-e4b0cc22006e/peresupad.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE1 5896 bytes
SHA-256: f5e208338d6631d969c35bf6f0b9a912fe22dc3432502a390b88f816f9f6b55b
font_01_sfnt_off00006ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF5 11076 bytes
SHA-256: 175676bdb320b01292dcbe07d86b40b5a112e1434ef51e670a200ab0354df373
font_02_sfnt_off00009629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9629 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
font_03_sfnt_off0000ab3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB3E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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