Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67c805cacc298ac…

MALICIOUS

PDF

34.9 KB Created: 2020-10-18 05:57:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dde6d2fa2f8a53169911bebac71630f7 SHA-1: 5b807bf23cde5e28dc64bfeeda66db0f54a5bf54 SHA-256: e67c805cacc298acbd1fcca6fabedab4a23e065d46e532645484855ca46cbbd9
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/strik?keyword=well+said+4th+edition+pdf In PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/059d55fbff3.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/pokobu-pidoror-pekirez.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/gazolofuvavozo-ruvitowaf-tomonodok-jefike.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/palaj_xofepevez.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/2122744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f875989ddf5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369327/normal_5f8a036b88319.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/1/0437/6693/9799/files/geometry_dash_apk_appvn.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7145/8468/files/buwemogiwagafejus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6996/7013/files/definicion_del_manual_de_organizacion_y_funciones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5255/6184/files/sasibafakasij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0205/1235/files/83373431397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9572/3683/files/medikidafawo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45bb8c5f-70c5-44b3-8d2f-01a4d5ca9558/demifuwakarujet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47129b46-6d13-4b58-9db6-5086b54c677a/gavopusedik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b22f80a0-a90f-4179-8064-3d148bc37b54/89890911869.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58b65de3-46f9-49fe-9e6a-e85205cbf6d6/rebatufovekid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc7a50ee-1c8f-4cf6-848f-5febb4a77cad/xotaxozonosabav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b8d8837-9cde-411c-bbd2-4ad32bce84da/67374993001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e50c407-64bb-451a-bd84-9cac5a9f41cd/gegawopibekanaluzabowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed21ea05-3143-42ba-8163-99b3e7ba9b71/71468093275.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a30d163-e395-4851-9e46-a65fd36d9558/mazezuwonisapazapabomo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D4B 5136 bytes
SHA-256: 5e1e310a7196554fdee16682eea68574f88fdc83b68de00a6d22b43d9da1011c
font_01_sfnt_off00005ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED0 9208 bytes
SHA-256: b15b5830244b605f7cd11a3513ead263cc984633243c817ab201d7a8e67582e3

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