Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf9cb4504961e7a…

MALICIOUS

PDF

69.9 KB Created: 2021-02-27 20:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fa4437ab201e4c0825a710c84b1372ac SHA-1: c0a28ac5790782431d7561f1ae0713d4b91d4f03 SHA-256: 1cf9cb4504961e7a436ffcd713339525a9365a932edb4b77a47d13fe03b00bc4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/wix?keyword=instituto+de+cultura+de+baja+california PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472776/normal_5fdbc95c1496e.pdfIn PDF document text
    • https://cdn.sqhk.co/guvevifowo/mrZKieU/exocytosis_and_endocytosis_mastering_biology.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/can_you_still_buy_a_wringer_washer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472773/normal_5fc96f508a3e0.pdfIn PDF document text
    • http://fakurivevid.scienceontheweb.net/nowogopamaselipulexaro.pdfIn PDF document text
    • http://kogutojoveso.mywebcommunity.org/contabilidad_de_costos_significado_en_espaol.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/Cigjjhe/vezujazivalevoxedojobusas.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/how_to_paint_a_room_with_a_chair_rail.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/kopajubupudozob.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459785/normal_601a08cb2c05f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446925/normal_5fc8d45eee5eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444882/normal_5fd7ce1092bad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/41911551526.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_off0000d46c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD46C 5168 bytes
SHA-256: 963c707bf0a957dca6723e48801abb3a1a197b0edbc5ef2b12842be3948e9f60
font_01_sfnt_off0000e60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60F 11104 bytes
SHA-256: f5000b03508533b036f7b0881e900b9f2a7e944ff8049051c817c30ceb58fe31