Malicious PDF — malware analysis report

Static analysis result for SHA-256 533400111f993d33…

MALICIOUS

PDF

46.9 KB Created: 2020-10-25 13:16:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: fe7be74796326136eadccf5afe8163e1 SHA-1: 9e673b3683fc20dae109536e181aacd57cd9b0e9 SHA-256: 533400111f993d3359c9db5bf7968d4515289d35954469ab7edccc594b573c0f
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://gettraff.ru/pify?keyword=change+pdf+file+to+word+document+free In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nipomomuka_gisotufeje.pdfIn PDF document text
    • https://luxexawasoju.weebly.com/uploads/1/3/4/1/134109261/1776606.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/wogafij.pdfIn PDF document text
    • https://wefolukozik.weebly.com/uploads/1/3/1/4/131406413/feee9600c1464f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366407/normal_5f93504fd5b96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385228/normal_5f90b08366b2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376621/normal_5f8cadd9d4f21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386084/normal_5f8d8f09a9aad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380682/normal_5f927b97a6aa4.pdfIn PDF document text
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/dimabanak.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/revinarimenapejigeti.pdfIn PDF document text
    • https://visajemilami.weebly.com/uploads/1/3/4/2/134265887/1913235.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/3fddae16-2e4a-4269-88a4-7f6782a3f5fb/lusawofuraduj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e9cf979-c7a6-43c6-b2d8-cbf2a5a95cdd/57972249719.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8647e8c8-df22-41e8-b8df-50b127cd72d1/scale_drawings_and_models_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfd47d52-cce7-4c41-816a-c92a1830756f/nokelokorawotolako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed408120-b0d8-401b-abd5-70d91b480031/37991939416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/158e266e-37b1-4d7c-bf15-897ae30ae627/76037812907.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac60b2a2-95ea-479e-91f9-2d4c6ac46988/99061581976.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/jotekekut.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/nugiloki.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/toxicidad_por_aines.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/tanudap.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/esv_student_study_bible.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_off000075ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CE 5388 bytes
SHA-256: 1dbb971e8ff924766dd31f97834255717952601a8e0bca733519db19b128792b
font_01_sfnt_off0000880a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880A 10904 bytes
SHA-256: d3aeabcd5baf17287c47e6683fe6e16d08cbfb1c3fcaf19434acd97f057f0d24

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