Malicious PDF — malware analysis report

Static analysis result for SHA-256 85d8e06cbe9e6cd7…

MALICIOUS

PDF

72.9 KB Created: 2021-02-15 09:06:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e731ecbaef076c7f3ba3192d922efed5 SHA-1: 05d7494b6cc0d4a815dcfe1f6e1f3e305318a7e4 SHA-256: 85d8e06cbe9e6cd7860d42ddd75bdcfb7f0ab8a1381edcd2b57ab596c3662c90
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=bhojpuri+song+2019+dj++mp4+video In PDF document text
    • http://lidlid.xyz/biology_project_karyotyping_activity_answers2ca4q.pdfIn PDF document text
    • http://trudogoliya.online/jujasirofimoduxiwarugutewv8kdg.pdfIn PDF document text
    • https://cdn.sqhk.co/tasaxasup/didxUgj/cartoon_video_song_download_mp4.pdfIn PDF document text
    • http://clebohets.xyz/windows_api_referenceg8os9.pdfIn PDF document text
    • http://legiontry.online/naxiduwamopufedimetemo3ig1.pdfIn PDF document text
    • https://cdn.sqhk.co/gipekoma/hh54icl/51379501659.pdfIn PDF document text
    • https://cdn.sqhk.co/sowumavag/hdhak2f/32103713838.pdfIn PDF document text
    • http://bilkaita.space/41714191725w5fzz.pdfIn PDF document text
    • https://cdn.sqhk.co/zegofurop/2ie290K/8877637926.pdfIn PDF document text
    • http://varnisvakq.ru/45496989681v0led.pdfIn PDF document text
    • https://cdn.sqhk.co/xobabowiwa/vbgghfZ/gun_club_2_promo_code.pdfIn PDF document text
    • https://cdn.sqhk.co/wemopizajazo/bhe2Tic/redeem_code_zombie_tsunami_android.pdfIn PDF document text
    • http://mybiol.site/action_verbs_picture_cards4qeyu.pdfIn PDF document text
    • http://zakunofukar.iblogger.org/modern_business_card_psd.pdfIn PDF document text
    • http://euroshopmn.space/3974304197339kv8.pdfIn PDF document text
    • http://xokubenafap.66ghz.com/44182145859.pdfIn PDF document text
    • http://copyright-rules-help.com/punjab_carrom_championship_2018vg7di.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/hf27Ghf/xujuxovobokoj.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_off0000dc4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4E 5888 bytes
SHA-256: f4187278a6296a81a0b2333ae0b2246c3b89c57440b38806d168e3d2bdc0d67e
font_01_sfnt_off0000f049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF049 11372 bytes
SHA-256: 5f5488e37a2a2a0a878997470e481af345da40009e9eb08d8018a2fc2e9c7ff2