Malicious PDF — malware analysis report

Static analysis result for SHA-256 66f3b3b4285ce647…

MALICIOUS

PDF

71.0 KB Created: 2021-02-27 19:08:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2b5a61ec16a6fa119419fbeb43e3bca4 SHA-1: 98a77759ca08203eb1e3f2ff9b47a18c9c9cd3ea SHA-256: 66f3b3b4285ce6473068e1d4bee11340964b7187e5615f765eb79d5f792980f3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://nipisod.ru/award?keyword=reiki+practitioner+salary+uk PDF link annotation
    • https://cdn.sqhk.co/pinofizulag/hjbF5gc/xatinewinopamiterelesima.pdfIn PDF document text
    • https://tonawonigavima.weebly.com/uploads/1/3/5/3/135345065/panepavivotilew.pdfIn PDF document text
    • https://donimafu.weebly.com/uploads/1/3/5/3/135395233/7841672.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/iEhcidi/attack_the_light_fusions.pdfIn PDF document text
    • https://cdn.sqhk.co/xamapetarel/Ywjjrif/11555749170.pdfIn PDF document text
    • https://dibekojiworibo.weebly.com/uploads/1/3/1/6/131637919/8707947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459329/normal_5fdad9f8e2503.pdfIn PDF document text
    • http://tufuwavaziga.mygamesonline.org/joy_luck_club_book_club_discussion_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/nurijodefa/T0iejif/wulixevabelujuzewebik.pdfIn PDF document text
    • https://cdn.sqhk.co/zolewiko/gdGjgdw/final_fantasy_7_remake_xbox_one_review.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/lAqhcji/vevafom.pdfIn PDF document text
    • https://bifixebuwo.weebly.com/uploads/1/3/0/7/130776276/9476152.pdfIn PDF document text
    • https://wikabolodaj.weebly.com/uploads/1/3/4/6/134648749/6116789.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/jijbjfz/percentage_change_calculator_skills_you_need.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuzemepusiloj.onlinewebshop.net/can_you_override_nest_thermostat.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/como_fazer_um_convite_de_aniversrio_digital.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_off0000db9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9A 5100 bytes
SHA-256: cbf074f4240b417a9721756b4888223888a1d7ed8c5926a4545222fa1e21183b
font_01_sfnt_off0000ed0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0D 10156 bytes
SHA-256: af078b5526bb7b237c875d1a63071d80f76da7c13e40d004d969a0665515dceb