Malicious PDF — malware analysis report

Static analysis result for SHA-256 09d4f81a91521f8f…

MALICIOUS

PDF

72.1 KB Created: 2021-02-28 19:51:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bb7243d9766fbf28f8ead95f1854beba SHA-1: dd306a3d67473082ed102cf304fe4d6676bcbcb7 SHA-256: 09d4f81a91521f8fb94e0a4014de076bc6803370df5dc97e4f54da15f43cce4a
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://lozipotod.ru/award?keyword=spektrum+dxe+compatible+receivers PDF link annotation
    • https://nesamakamaxo.weebly.com/uploads/1/3/1/6/131636712/4892006.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/what_constitutes_a_breach_of_trust_and_confidence.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/harvard_best_cover_letters.pdfIn PDF document text
    • http://jawazapefaxuzit.mywebcommunity.org/78552470019.pdfIn PDF document text
    • https://zamikife.weebly.com/uploads/1/3/1/6/131606416/nugarukesolara_gavajobevukeb_dulegomesuwij.pdfIn PDF document text
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/64303c11.pdfIn PDF document text
    • https://tovakuroxi.weebly.com/uploads/1/3/1/1/131164121/pitusukubiviri.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/georgia_drivers_license_name_format.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/NicOhgS/31897026927.pdfIn PDF document text
    • https://penixosifa.weebly.com/uploads/1/3/1/4/131482878/xuraloboj_mekudeviwetiti.pdfIn PDF document text
    • http://fituxem.sportsontheweb.net/satomawolemu.pdfIn PDF document text
    • https://sulogaxelope.weebly.com/uploads/1/3/1/4/131438888/3732942.pdfIn PDF document text
    • http://gisoboxizaza.mygamesonline.org/qu_ao_se_puede_legalizar_un_carro_para_mxico_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/8ih9Phd/kumuvunad.pdfIn PDF document text
    • https://giwegedunidex.weebly.com/uploads/1/3/4/7/134701534/guviz_fidutidagixej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/godixanepuvidukovug.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/app_keeps_stopping_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/company_portfolio_template_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/twinkl_cursive_letter_formation_sheets.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_off0000d6db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DB 5656 bytes
SHA-256: 125e31d612dac4fab65e77b4e0ca8dbbb12577654bfb265bdd574cbb0c9006a8
font_01_sfnt_off0000ea00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA00 12444 bytes
SHA-256: 31d00c3703ce9ca38ed563c08aa958fe624b655e5fa4d2fb804b9ddc3abd6654