Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4cf84c9dbb2e680…

MALICIOUS

PDF

41.0 KB Created: 2020-10-04 09:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 46f5fed835c8a273bcfa669c2356720a SHA-1: 6ea12845e8a94d41ad7eda915784fc259398265c SHA-256: b4cf84c9dbb2e68049709d0c9e0484ad6c3fe5ee0b568b8767d58729d9655ece
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/pify?keyword=el+milagro+mexicano+ensayo In PDF document text
    • https://site-1036816.mozfiles.com/files/1036816/bivazito.pdfIn PDF document text
    • https://site-1043534.mozfiles.com/files/1043534/5491389354.pdfIn PDF document text
    • https://site-1036807.mozfiles.com/files/1036807/wajuluzetamemud.pdfIn PDF document text
    • https://site-1036750.mozfiles.com/files/1036750/sudunukexotikaraluwa.pdfIn PDF document text
    • https://site-1040094.mozfiles.com/files/1040094/vukaganid.pdfIn PDF document text
    • http://sofozu.newdestinychurch.net/uploads/1/3/1/4/131410538/823929327.pdfIn PDF document text
    • http://files.lizziemahoneypaintings.net/uploads/1/3/1/8/131857193/9781517.pdfIn PDF document text
    • http://files.thecheekyparlor.com/uploads/1/3/1/8/131857198/f02382712b4.pdfIn PDF document text
    • http://xopus.pop-wuj.org/uploads/1/3/0/7/130740044/c08135.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/7512/9510/files/54535576052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4776/7201/files/tawenopapebudoraninizagej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3484/8675/files/family_guy_lois_birthday.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6908/6623/files/acorn_newspaper_football.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7977/7952/files/55142246569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8246/files/56824311268.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

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_off000060e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E5 5244 bytes
SHA-256: 483e9dc40b748a1235d7a3e0c3e22f758b4d7626b94b75658b0f3463e474b8bc
font_01_sfnt_off000072ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AD 10808 bytes
SHA-256: b8154758e74b4cd20c79fd5343a5b1c4792f22e0865b677cfa3f6a6ca3e2e1b5

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