Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5321db644a68afe…

MALICIOUS

PDF

44.2 KB Created: 2020-10-28 23:26:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 81a1af3e3cfb53ed4873c0220e69c86c SHA-1: 08c2015a50a9aef9f5e5ea059cec9c83234baaf5 SHA-256: b5321db644a68afe49395e45cff94e3f2d926fcf9ae5b556ce724c8dd9048d87
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://ttraff.me/123?keyword=cross+necklace+tattoo In PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/wixigasovigemoximete.pdfIn PDF document text
    • https://kutenamig.weebly.com/uploads/1/3/0/7/130740069/4419647.pdfIn PDF document text
    • https://rujasuxok.weebly.com/uploads/1/3/1/6/131606047/popozivosug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370280/normal_5f883e75e349c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372086/normal_5f8b749a93d37.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367640/normal_5f8c9177e8975.pdfIn PDF document text
    • https://ruwopevod.weebly.com/uploads/1/3/1/3/131397973/tovos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392668/normal_5f906618b74f5.pdfIn PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/ea04f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_5f8fe60c3b66c.pdfIn PDF document text
    • https://welofubevi.weebly.com/uploads/1/3/1/8/131856084/xufes.pdfIn PDF document text
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/xinuzafejaboj_bexanerided_podujenabim.pdfIn PDF document text
    • https://jujizifij.weebly.com/uploads/1/3/4/3/134309807/2b426.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007199.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007199.bin)
    • https://uploads.strikinglycdn.com/files/19a19e8e-cb7c-4d89-a3c4-81302143f056/5660282149.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9171e6f-ff37-4054-82d8-c3d41e527a99/gakolasuxod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e8b4733-67f1-484d-85e5-a420706a1ae8/4003769105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ebd0a64-1afe-401b-85d8-8370c410994f/fowoxuwojiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1953f67c-5ab1-4ae1-bc84-09068623d64f/pimejozusoresenugifapuzat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60692021-749d-468c-baf1-01c00666b45a/zetatal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6325008-3512-470e-b076-b1db67621133/nmos_vs_pmos.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 extracted file (font_00_sfnt_off00007199.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7199 4760 bytes
SHA-256: 1a3f3ff9691d3019d43cb3ac3f63f9564f5ab5ed2c936b62d54e82224e0842c3
font_01_sfnt_off000081d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D5 9996 bytes
SHA-256: fbbf67330210bd21396a2fd370aebcab14c533a2aa0a16c32fe9fef4242bb459

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