Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c6618378b389c7…

MALICIOUS

PDF

72.3 KB Created: 2021-02-22 07:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e8a9b6fde4e5070e5a48066c5986717d SHA-1: e9d4114e5f26cdfc9ae98731abd63a56ba8fe4e0 SHA-256: c2c6618378b389c7ecdace43b30ee5568e7e4f35e06635ad2b92bf8629665292
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=image%20where%20you%20can PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482020/normal_6001a9e8dfbbd.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/eicgjhc/download_guide_for_free_fire_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/potonefamuve/jggfgh8/luwafejosoxekekikofo.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/dIihihW/46111108636.pdfIn PDF document text
    • https://damujulul.weebly.com/uploads/1/3/5/3/135335913/315ab1e0.pdfIn PDF document text
    • https://kilizalulalikog.weebly.com/uploads/1/3/0/9/130969980/netazizumix-zegamigitudi.pdfIn PDF document text
    • https://kawuzuvom.weebly.com/uploads/1/3/1/3/131379118/2702939.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_601b18b10bb98.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/FTjahgR/pixel_art_gif_wallpaper_1920x1080.pdfIn PDF document text
    • https://cdn.sqhk.co/gidenateg/ihiahej/detupitatajiwagateze.pdfIn PDF document text
    • http://pugalibapuf.iblogger.org/tulabetaledu.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/ghdUhiC/gigaxeratomiparabiw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nisugaraxefubo.rf.gd/bin_viewer_android.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/flight_simulator_2019_game.pdfIn PDF document text
    • http://nelenubo.rf.gd/flying_pickets_only_you_sheet_music_free.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_off0000de18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE18 5168 bytes
SHA-256: 8a894cb6091e815f15f399684d86d51b31949cb8a8595741f7c53e9d0f65f603
font_01_sfnt_off0000ef9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9D 10712 bytes
SHA-256: 84724f27821df89d7ec78485b5cd518b4c93803e744e981b7b2253f19d1bfd51