Malicious PDF — malware analysis report

Static analysis result for SHA-256 4632667a80cb56cf…

MALICIOUS

PDF

101.6 KB Created: 2021-02-20 20:49:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9fbf1cab7e4328f1c78e3768f9cc7ac7 SHA-1: de617bab33cbeba2fd8d7b364d9772d3f454f0b0 SHA-256: 4632667a80cb56cf906334dbf29f532340b901eeae10c0e42fbb4e4a73b671d2
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://maypoin.ru/wix?keyword=strikeforce+kitty+1+unblocked PDF link annotation
    • https://xupemapimosow.weebly.com/uploads/1/3/0/7/130776757/nimixowogulozun.pdfIn PDF document text
    • https://biramufon.weebly.com/uploads/1/3/4/7/134775887/nejerobit-mokigegevuke-vadukikigonur.pdfIn PDF document text
    • https://duzuvopewawufos.weebly.com/uploads/1/3/4/4/134491429/divoseb.pdfIn PDF document text
    • https://fezuwarojeti.weebly.com/uploads/1/3/1/3/131383544/fizexexafaxen_wuvopomogififar_nazetijipe.pdfIn PDF document text
    • https://cdn.sqhk.co/zujumatatub/ujcibhh/3459689147.pdfIn PDF document text
    • https://xogevowizixid.weebly.com/uploads/1/3/0/9/130969953/gogomajagatoxudutezu.pdfIn PDF document text
    • http://svoytrylend.xyz/kenibakrfvbi.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/gHgiafd/unicolor_steps_color_ball_jumpsuit.pdfIn PDF document text
    • https://cdn.sqhk.co/gemesikexo/hfvidA9/planets_visible_tonight_northern_virginia.pdfIn PDF document text
    • https://kaledawuvilef.weebly.com/uploads/1/3/4/7/134727412/guviridojexubugilazo.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunadegu/0AAjdZZ/logukinomibuvoxutajex.pdfIn PDF document text
    • https://didejigoximatex.weebly.com/uploads/1/3/1/0/131070501/6961847.pdfIn PDF document text
    • https://dafizigupiteg.weebly.com/uploads/1/3/4/4/134492389/5489643.pdfIn PDF document text
    • https://vuduzilir.weebly.com/uploads/1/3/1/8/131857383/timafirin.pdfIn PDF document text
    • https://cdn.sqhk.co/xagogudexo/ossiauR/57892001317.pdfIn PDF document text
    • http://instas.site/archery_for_beginners_guidebookcshwk.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/fGfghaY/rexerirapinekawezu.pdfIn PDF document text
    • http://cadenalia.com/film_american_pie_8_sub_indogaezz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00014b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B8A 5088 bytes
SHA-256: 7ac85861ffbda678d42a4c907edea42ed2ba0090961a04a3e4ed5611ecfa1012
font_01_sfnt_off00015d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D01 13180 bytes
SHA-256: 5e678eadbbb14b11fe1c2e507ff01d90eaa90cfa3590f4457dc03536938b5d8c

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