Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fb37bd339826002…

MALICIOUS

PDF

64.3 KB Created: 2021-02-13 08:31:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9bfefa8d2fb7aa154fa7f064022c4eb7 SHA-1: b0189167b0d04f4a1915f41e926f6ab0f274ee22 SHA-256: 6fb37bd339826002b7bfc29c1a5294a5645903c283400919fd44bdaa4c54a932
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://jottigo.ru/123?utm_term=dnd+5e+feather+fall+item PDF link annotation
    • http://golomashvanna.xyz/28208590994k1uf6.pdfIn PDF document text
    • https://cdn.sqhk.co/bebetirifam/h7Hijge/residual_definition_economics.pdfIn PDF document text
    • https://dipitamadupod.weebly.com/uploads/1/3/4/8/134882687/b8b8e03.pdfIn PDF document text
    • https://cdn.sqhk.co/bonosexov/iclPgia/dilated_pore_of_winer_histology.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/ajcigih/grand_theft_auto_san_andreas_official_soundtrack.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwunikuneg/bASjhTC/police_dispatcher_soundboard.pdfIn PDF document text
    • https://leburivirabilaz.weebly.com/uploads/1/3/1/4/131453170/xelejaniz.pdfIn PDF document text
    • https://boxesagako.weebly.com/uploads/1/3/4/5/134589877/4b4eea.pdfIn PDF document text
    • https://dikekivex.weebly.com/uploads/1/3/0/7/130775400/a20f2e77687a.pdfIn PDF document text
    • https://vugovarekuluf.weebly.com/uploads/1/3/1/6/131607096/renimusawi.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/video_star_apk_free.pdfIn PDF document text
    • https://cdn.sqhk.co/tiviluluje/gjcigid/17616248524.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zewipurorafe.epizy.com/default_dance_sheet_music.pdfIn PDF document text
    • http://gomaxum.rf.gd/aflete_training_guides.pdfIn PDF document text
    • http://tizedukef.epizy.com/der_bergdoktor_episodenguide_2019.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_off0000bf0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF0D 5092 bytes
SHA-256: 4147dd64ddf3531a89fcf54ab51e3ca9532f7ce4f0bde38016a05f714677d820
font_01_sfnt_off0000d042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD042 10636 bytes
SHA-256: 8ecd7c47fd30e8a86ec8462e88c8e0794e29ce7bde3506e8cbc06819b55d3492