Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f812389bb7ac56a…

MALICIOUS

PDF

67.3 KB Created: 2021-02-15 03:59:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 01016cd2a06d14b65adc70250cce601e SHA-1: b42723702c0ab4e08686139cceeb9c453146388a SHA-256: 6f812389bb7ac56a82a751b9d87022e0118bc3cc95008da34240aa82ee250898
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://druttle.ru/wix?keyword=bonanza+boots+reviews PDF link annotation
    • https://cdn.sqhk.co/tavedikovo/pMvhigc/lifekarisin.pdfIn PDF document text
    • https://telidububiz.weebly.com/uploads/1/3/1/4/131452987/8993975.pdfIn PDF document text
    • https://cdn.sqhk.co/bimonabozo/cifjinJ/uba_mobile_banking_self_registration.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/jjhhg1W/choppa_go_blocka_blocka.pdfIn PDF document text
    • https://cdn.sqhk.co/xenojepezere/ifgixgc/dosugurugiset.pdfIn PDF document text
    • https://cdn.sqhk.co/kajipazuto/giJhdgz/soccer_goalie_clothing.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/cheGMii/24101334146.pdfIn PDF document text
    • https://cdn.sqhk.co/sejejajoxej/idhf8zP/samsung_s3_email_setup_authentication_failed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://suxorodefis.epizy.com/44672530316.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/90819276875.pdfIn PDF document text
    • http://fapabuzoliwesaz.epizy.com/9640631673.pdfIn PDF document text
    • http://jujeludapivibiw.rf.gd/sample_personal_leave_of_absence_request_form.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/2963494282.pdfIn PDF document text
    • http://vatujub.rf.gd/free_printable_blank_invitations_templates.pdfIn PDF document text
    • http://lojupodinitaxug.epizy.com/cisco_academy_exam_chapter_1_answers.pdfIn PDF document text
    • http://zifezerolivuba.epizy.com/automation_anywhere_server_10._3.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/osrs_slayer_gear_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/different_versions_of_anthropocentrism.pdfIn PDF document text
    • http://varewokumozikon.rf.gd/jinememogutananifada.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_off0000ca9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9E 5036 bytes
SHA-256: 48665195a97b9a71cfa8dca5b10a385fb18c03df712c61824734cc9b44ddf57e
font_01_sfnt_off0000dbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE8 10324 bytes
SHA-256: 1eecacae0f1782b94ef6b15a96c17107facdbaf7a5a8d0a9b15ef6fd20e2475f

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