Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5af6a36b1160593…

MALICIOUS

PDF

81.2 KB Created: 2021-02-28 00:11:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 35c4ccba1764568ec7979a3941cc0677 SHA-1: 38116ebd09e86c2566bb9487498d4e0aced76a94 SHA-256: f5af6a36b1160593c53d6c486cdb5f060c770b44d556cad5a7503ab819b317d7
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://jottigo.ru/wix?keyword=acheron+mammoth+guide+2018 PDF link annotation
    • http://piwulag.sportsontheweb.net/dawomivitaveluvadebax.pdfIn PDF document text
    • http://istlan.space/looks_international_pvt.ltdj102v.pdfIn PDF document text
    • http://robertferrell.net/coal_power_plant_pros_and_consklok1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410415/normal_5fd087a2c5132.pdfIn PDF document text
    • https://cdn.sqhk.co/sevalaturi/fs02nvJ/wonefapesidazadapin.pdfIn PDF document text
    • http://naturwows.space/256050460782s2ps.pdfIn PDF document text
    • http://jozipuvuwuzaj.mywebcommunity.org/fopegozuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414672/normal_602145cb1861d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424347/normal_600aece355b18.pdfIn PDF document text
    • http://ridovise.sportsontheweb.net/positive_psychology_and_recovery_movement.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473388/normal_601b66494d77a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fetekovabu.onlinewebshop.net/jeu_de_cartes_a_2_facile.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/pefofej.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/kubuf.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/velumowilifufe.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_off0000f6db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DB 5652 bytes
SHA-256: b77d2f2ec06b735056dc2f0f4c4f3a9513f0f730a5e863871e5620acfc393536
font_01_sfnt_off000109ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EE 15024 bytes
SHA-256: ca859c1ab06b483fa781d83bb74c9b9c6b7d65179faae898b30f7fb6bc36efa2