Malicious PDF — malware analysis report

Static analysis result for SHA-256 a84f0028413c5997…

MALICIOUS

PDF

69.1 KB Created: 2020-10-26 20:59:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: b4c9c63a31ba73fe13e2bbe8a3806138 SHA-1: 531d449c447b4cf073724bbb21d10272b6bfe6c8 SHA-256: a84f0028413c5997fe667c3bd8591c1afa31c14a995094a641f56d0c1e76872f
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=hydrogenated+vegetable+oil+chemical+composition In PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/kagasiwobut.pdfIn PDF document text
    • https://jabiratunibi.weebly.com/uploads/1/3/2/6/132683422/92e1dbf6322.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/kuwekewugi.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/zobobimasiwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f8c8c3a8c2b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f87574a93dd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_5f8856cacd65a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377909/normal_5f904c891c2a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/361b4007-b666-4a29-9bd6-4d434b3f3221/minecraft_bedrock_edition_crazy_craf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b449aafd-aada-40d0-8e83-e620a6cd4da2/warimituj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/169dc0dc-2b0c-45ca-a2ea-9f978ea7c45a/pobuzeru.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/papyrus_of_ani_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/deled_506_assignment_answer_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/sociology_optional_syllabus_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/78761941362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2172/9955/files/jukoninexoxapeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9173/files/xulodovepowonasopagupirol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b3986d-509d-4fb2-9bb2-dbef4f3fff20/child_development_santrock_13th_edit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef25708c-5706-4036-bd76-c1e81bcd6d16/spv3_3.2_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26c406a2-bf3d-4662-b523-46f5b5fe7f06/doluzogabuxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72e81507-7907-4c9d-8919-befa6674c7a5/pryme_al_800.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b5663e3-887a-4377-adc6-e0830e3636b7/samsung_tv_wont_tune.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_off0000cbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBF3 5748 bytes
SHA-256: 8c0aa2c04fc23f3fdb89908ff9575927cda317426982a9a2eb9b5f5cdee931b1
font_01_sfnt_off0000df59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF59 11880 bytes
SHA-256: 1f3a7513586c0d8b7f131876c2f7d803e0e1baf6c97ca3cdac14c69afbbb1eac

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