Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfd02df996292413…

MALICIOUS

PDF

52.1 KB Created: 2020-10-14 20:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 66a9dce58c3c5e4ab613aa8186c7249e SHA-1: ac7259f0f61e9cb7a23345ecc50a47c2a5c7bef3 SHA-256: cfd02df9962924136a5cc81261a743b7abd15a6a69c8fba7300fa670b25326df
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=november+2020+calendar+pdf+download In PDF document text
    • https://site-1040174.mozfiles.com/files/1040174/23159555552.pdfIn PDF document text
    • https://site-1037019.mozfiles.com/files/1037019/fipozuwuxekabukemibu.pdfIn PDF document text
    • https://site-1042679.mozfiles.com/files/1042679/rubasafaserekafixipudofej.pdfIn PDF document text
    • https://site-1044113.mozfiles.com/files/1044113/39281731516.pdfIn PDF document text
    • https://site-1038475.mozfiles.com/files/1038475/18380702945.pdfIn PDF document text
    • https://site-1044184.mozfiles.com/files/1044184/jaragegupasaxe.pdfIn PDF document text
    • https://site-1043055.mozfiles.com/files/1043055/4217149731.pdfIn PDF document text
    • https://site-1042843.mozfiles.com/files/1042843/nipurukagidisavadixusi.pdfIn PDF document text
    • https://site-1048481.mozfiles.com/files/1048481/daloto.pdfIn PDF document text
    • https://site-1040766.mozfiles.com/files/1040766/88921913338.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f87130acd97b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5f8737e9ab8fc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/8ac4f3f2-3afd-4ba7-bec1-8d0b3cc20c92/zemitusidipabu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37793bd2-cfbc-4c46-9117-2c50d9e6fe41/miluvivikegip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60d49ac5-903d-4002-aeaf-f11f3627ba28/5368157889.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb8af772-69ce-4841-975e-f41936eb1941/pegodanatikatuzazutudu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56358574-aa92-4681-ae9d-9ca328b120d7/kojewaziwulepebido.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b459bf90-f857-458a-84b6-5207b94773fd/jovopizajiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8582ba45-c078-400c-b2cb-54c24e9b97a5/suviwigivagemususej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7afc5c08-a746-4724-a3e1-699a644d40e6/52184627078.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e7e067a-38f6-4e1c-95a3-744d7f0ba0b9/vapumalipabiwodixog.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D56 5316 bytes
SHA-256: e1750013a0380ac13233b80856f6bbac2d4bae25f04037e52824b4f503393473
font_01_sfnt_off00008f59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F59 11188 bytes
SHA-256: f414d2ac07165819ccb2b2e2d18a768b93e5133f4921727210597297ec853348
font_02_sfnt_off0000b44d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB44D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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