Malicious PDF — malware analysis report

Static analysis result for SHA-256 517e49c71b2e2b07…

MALICIOUS

PDF

69.3 KB Created: 2021-03-07 09:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 205e468480715528b405f711aa8f0935 SHA-1: 953fdb71a13012d064ae45d0cdc0774966a9b80f SHA-256: 517e49c71b2e2b077e80ae8578c737c7252ed86238481aac42fc1dfb026ed015
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://resalured.ru/wix?keyword=john+jay+college+cunyfirst PDF link annotation
    • http://noxivivixuza.22web.org/answer_and_cross_complaint_sample_california.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374859/normal_5fc59ca2db996.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368985/normal_5fce4cf072a56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421937/normal_6042d24060be2.pdfIn PDF document text
    • http://punejew.mygamesonline.org/fedex_canada_tracking_customer_service.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/01a2e26b-5425-4dbe-aba0-d2a703570be5/romeo_y_julieta_reserve_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85c4ac5b-b666-4807-908a-474b232dc475/top_biochemistry_books_for_medical_students.pdfIn PDF document text
    • https://9f5bcc56-a059-4f00-ae85-604acd6a3d2d.filesusr.com/ugd/ac9354_29615de83f684bc7ba9be0fa7c8402dd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b70c255-ce10-485c-bb1e-bb93a0e0498b/aula_internacional_1_nueva_edicion_libro_del_alumno_gratis.pdfIn PDF document text
    • http://bivojeda.atwebpages.com/85290966192.pdfIn PDF document text
    • http://neduweleviwov.rf.gd/fejenowutidit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16359c84-da99-4dd9-94fa-7867a67fd751/fubotarokivotola.pdfIn PDF document text
    • https://8d928d4c-4e32-4dc6-8093-d383c90b3cca.filesusr.com/ugd/b5d49c_dda223225326408da281e7cc784f6e7f.pdf?index=trueIn PDF document text
    • http://nixomirorubu.myartsonline.com/how_to_install_windows_10_operating_system.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/047f3766-eb82-4092-9c37-e11ca3a3d3d2/favafidisiwanukefazo.pdfIn PDF document text
    • http://gutekuretejapoj.onlinewebshop.net/19004772655.pdfIn PDF document text
    • http://kitoxez.epizy.com/the_go_giver_review.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_off0000d211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD211 5312 bytes
SHA-256: 1c43a19bee2e5991c5c5f4073044e576bcf6c2cd8a7b37cb8d331e02eb224f7c
font_01_sfnt_off0000e42d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42D 10612 bytes
SHA-256: 506d3c3b6ba9e2b22b67aa5a297105bbc75ffbc3960e06c9f25193ce36b30ec3

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