Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c02f0d4a658779b…

MALICIOUS

PDF

44.1 KB Created: 2020-10-23 17:31:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-02
MD5: 058631b0016fd58fc0b12192b5175fb8 SHA-1: ad6be55b984e4245ea684cce4191f76471b6eb1b SHA-256: 8c02f0d4a658779b59a282bd81a9eba7871f333651db2e479f8f6cc55acd367a
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://ggtraff.ru/pify?keyword=petra+diamonds+application+form+pdf In PDF document text
    • https://vefoxetewezelir.weebly.com/uploads/1/3/1/4/131483279/jewil.pdfIn PDF document text
    • https://kuguzozivef.weebly.com/uploads/1/3/0/7/130739994/zevokimasisuvo-guvatevuroxe-paxerofaluwa-bijebubufovaz.pdfIn PDF document text
    • https://juxupadozimufa.weebly.com/uploads/1/3/4/3/134388451/dosopuxaro-tedefajopo.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/78e93a.pdfIn PDF document text
    • https://jufaxexave.weebly.com/uploads/1/3/0/7/130775513/57d02b5e848c77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_5f8df86059bb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8afcda545fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367914/normal_5f87e7226ec82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5f8b1377b1310.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366381/normal_5f88599e8f3fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374532/normal_5f8dff56a5c0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f8abf0917d03.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006aac.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006aac.bin)
    • https://s3.amazonaws.com/leguvefu/5781488089.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/88191583237.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/95019642980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dae7654-eda8-4fc0-8ca3-b74cc85c40b0/32450947205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b51674e1-25bc-4f88-8e88-3ca127afea83/zonegasenoso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7d1d550-6b20-4913-ae7a-7e4553706936/couples_clbres_fictifs.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/2161060884.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/80465116626.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_off00006aac.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_off00006aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAC 5300 bytes
SHA-256: 37f3eacd02c430a765423b994a5e7efdf601dd7c0dc41412c641b7e0090b0265
font_01_sfnt_off00007c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9F 11572 bytes
SHA-256: 03fbbd601e9c3d9b63f5867df26270017cd627112b4e0998f89953e640e5b0eb

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