Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef074e595ed69772…

MALICIOUS

PDF

72.7 KB Created: 2021-02-07 11:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 66722b454444a8c4d66ce6e0e9ad806f SHA-1: 11ec6a699e33b1d2ee8d1b03002723dc28921664 SHA-256: ef074e595ed697727a8d5813ebacf18c6240c7251ec4b060d6a028fee0cc7093
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://yafferge.ru/wb?keyword=courier%20address%20format%20in%20india In PDF document text
    • http://klyshsheff.xyz/cinema_4d_tutorials_freew8all.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/iagjgjf/fatutiposugusuwimufi.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/xukifalevasa071iq.pdfIn PDF document text
    • http://xonanudo.iblogger.org/loxikobixelowirare.pdfIn PDF document text
    • https://cdn.sqhk.co/dewozoju/Q2yCjg9/wormax._io_hacked_unblocked.pdfIn PDF document text
    • http://securespot.ru/wozins2h4g.pdfIn PDF document text
    • http://forpost-electrica.ru/vevufapujonaloduninesomuavkpq.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/ihcjhgi/70111107820.pdfIn PDF document text
    • http://epipog.com/cbse_improvement_exam_rulesshubn.pdfIn PDF document text
    • http://alisaborodaenko.design/ronikatojobaralituxucrscc.pdfIn PDF document text
    • http://reduslimitalia-official.website/34860757185652ax.pdfIn PDF document text
    • http://cactusvpn.live/bidavuwunabovududep76g.pdfIn PDF document text
    • http://bubuwem.iblogger.org/free_powerpoint_slides_template.pdfIn PDF document text
    • https://cdn.sqhk.co/naxenunovus/q9eieza/smart_charge_intelligent_battery_charger.pdfIn PDF document text
    • http://discout.online/16619021223z5elq.pdfIn PDF document text
    • http://tinivoze.22web.org/transformers_the_last_knight_barricade_death.pdfIn PDF document text
    • http://pearhaidhr.fun/walilefuvowa2uips.pdfIn PDF document text
    • http://remastacer.com/josedahyefc.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_off0000dfca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCA 4924 bytes
SHA-256: 17b6d3dfd40e747eea7a43d7a77daa9860bb3979e610ffb029e39b34e17a5c57
font_01_sfnt_off0000f070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF070 11004 bytes
SHA-256: 69a2a5361108a425a7b69be6e595daf45d6f3fded56510b77a898aa2028a1a2e