Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ef0e8dd74e11092…

MALICIOUS

PDF

68.8 KB Created: 2021-03-04 02:10:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: cf3a4ead67ce2c403cb2acf10130891b SHA-1: 5a0230d0159ab6440b48a040ac6e5909f0beeef1 SHA-256: 1ef0e8dd74e1109259eb46c831bad9439ab4ec758dd8e8681bbf081cd4d52abf
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://vilenefex.ru/wix?keyword=gene+expression+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/xasurila/ggl0nWC/dj_sample_pack_download_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fobonelaga/a6tkoqs/najegaj.pdfIn PDF document text
    • http://tehnotop.store/duxuwokkb2m1.pdfIn PDF document text
    • http://xonesasa.iblogger.org/comparing_unit_fractions_worksheets.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/gjSteje/adidas_face_mask_for_sale_near_me.pdfIn PDF document text
    • http://gafaneripebenu.iblogger.org/64219636261.pdfIn PDF document text
    • http://rupukimonedekij.22web.org/invisible_man_2020_movie_review.pdfIn PDF document text
    • http://magazinrf.xyz/59854585347bscc6.pdfIn PDF document text
    • https://cdn.sqhk.co/demanajinu/hdrCRge/vemitu.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/93725861117mkcaa.pdfIn PDF document text
    • http://hookup154.online/ziwonawosabemezuxibidaforlwt9q.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuzasana/Csghgj0/vitomaze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lopoduki.rf.gd/weed_eater_featherlite_fl20c.pdfIn PDF document text
    • http://zimemotom.rf.gd/72807122237.pdfIn PDF document text
    • http://zebofazedixa.rf.gd/barrio_bravo_mundial_gratis.pdfIn PDF document text
    • http://jedasuzafofirif.epizy.com/latanedinobu.pdfIn PDF document text
    • http://zurorunurem.epizy.com/xopabo.pdfIn PDF document text
    • http://sanozibexado.epizy.com/folder_colorizer_._cnet._com.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_off0000d325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD325 5132 bytes
SHA-256: c8f06d6c62f5e4020a9cb2532df060a45761496eeb3046bc8119ac8683f20708
font_01_sfnt_off0000e4ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AC 9832 bytes
SHA-256: 55cb84d1fcf3c5ae20e2c37554e7da0bc3ca44074e8ac46941a1d614236d5cd9