Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6f4d72a8d4b090…

MALICIOUS

PDF

72.2 KB Created: 2021-03-12 08:49:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 46524cb272f8db05b2a088d6844c5fe7 SHA-1: 20c6e765f78707461e78e4fca24d0c7e0487a1e6 SHA-256: 2b6f4d72a8d4b09053287057b9772bf8dd84d4b7d2b325e00176ef3868f30f1b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 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/wix?keyword=arise+voice+assessment+answers PDF link annotation
    • http://takipleskazan.org/58522012407scy56.pdfIn PDF document text
    • https://getukesi.weebly.com/uploads/1/3/4/7/134735407/vemotexefeboj.pdfIn PDF document text
    • https://bobefadapuxat.weebly.com/uploads/1/3/4/8/134858353/4123011.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488335/normal_60385652c3e06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415754/normal_5fd1f03a78669.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481831/normal_5fcdd0a128f01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491426/normal_5ff1cbdc2b073.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/7800316.pdfIn PDF document text
    • http://demask.fun/kagirelafiwulijenivujo4xsgz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483388/normal_60089bab02ad8.pdfIn PDF document text
    • https://fokinovev.weebly.com/uploads/1/3/0/7/130775288/bukenomubibi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423171/normal_600c6d9c91e50.pdfIn PDF document text
    • https://takixesa.weebly.com/uploads/1/3/4/6/134621412/8dec9df972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378620/normal_5fd2d0d80f2ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a86a6b26-b473-4b55-b9aa-7628a2bff077.filesusr.com/ugd/4f270c_648c77322baf4394b155401589ee7783.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/082307bb-edb3-49cc-bf41-77b3d3a8bf8a/jabaloredonavuwilav.pdfIn PDF document text
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_ffebba5bfca64dd78e6cb6f5f1ac844f.pdf?index=trueIn PDF document text
    • https://972af30b-04c2-4618-b911-83ba0b7fef9e.filesusr.com/ugd/84a5c6_cd9a32b6c1c3442183039a9b1c3b9101.pdf?index=trueIn PDF document text
    • https://38aad9b5-7a72-45b8-ac81-9fe73ce82000.filesusr.com/ugd/08338c_716f1bb272ea4a93aec56acb4f3c5271.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6b14ca0-be18-4843-aa34-5bfd210be6ff/77002304635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2d42c74-bf28-4435-9fea-c143d0bfd112/delta_flight_attendant_pay_rate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4e5b1ca-ac46-4b70-a2e5-0a8cbc8b2d69/95650875310.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab1d3014-ac6c-4164-af6d-5b2e8261a4f3/how_to_program_my_charter_remote_to_my_sanyo_tv.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_off0000df79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF79 5052 bytes
SHA-256: b46004a6b939165f22a33faa318d2818557243b6661c87babec710b4093a455e
font_01_sfnt_off0000f0a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A6 10244 bytes
SHA-256: 236439442edecc9132f3c31d38d15ec710e81dfc8b8d6e355a85c60d23ddf341