Malicious PDF — malware analysis report

Static analysis result for SHA-256 f090ab84ecad0ca1…

MALICIOUS

PDF

72.1 KB Created: 2021-02-28 04:39:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d0f4b8ea86579ee2ad81638edcdd9e3f SHA-1: 829d8e6172447173b44852cddc2399a14b53bc62 SHA-256: f090ab84ecad0ca19d1da74b91b5d1b7ae613c89b3381802ad0f426e971afa71
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://gimoguvi.ru/award?keyword=how+to+make+a+cup+of+tea+correctly PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366045/normal_5ffe0fb03cda0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448991/normal_60210fe724853.pdfIn PDF document text
    • http://fragcups.com/auto_leaseback_agreement_template68qve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_6034d57b7f22a.pdfIn PDF document text
    • http://alkim.xyz/careem_business_plan8nn4v.pdfIn PDF document text
    • http://aarbuz.space/vifanaforonabadidena69ajw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404503/normal_5fd820796d618.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379984/normal_5fee9dc729fb3.pdfIn PDF document text
    • http://zavarivaemvmeste.ru/mizoxopavenimamiwinipuxuqmx4h.pdfIn PDF document text
    • http://vovality.club/58239382079p0jh.pdfIn PDF document text
    • http://filfex.ru/gukonegegigojamuzajutegdrsg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426816/normal_60039b03aca50.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/beethoven_sonata_10_3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/matibabodinakanemovej.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_off0000dd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD33 5204 bytes
SHA-256: fb67dc872f70be5175c6eb83ce587aad3d548c9af1ba2486738202d73df8d632
font_01_sfnt_off0000eeea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEEA 10596 bytes
SHA-256: 6af843f09c36a7baae8cc891bef7f09bfa0e8ea8b0c63e87cd8e12968d15ccb8