Malicious PDF — malware analysis report

Static analysis result for SHA-256 d83a3fccb678f94d…

MALICIOUS

PDF

64.0 KB Created: 2021-02-14 00:52:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c03b33bff6533a6f19169af92b65d4a3 SHA-1: 3613fffc291b550c53c36a66e326efef0f3305e8 SHA-256: d83a3fccb678f94d9968694d1cbf14719877526ea31fb4fdf482d38d9782e3d5
224 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
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/wb?keyword=bengkalis%20dalam%20angka%202018%20pdf In PDF document text
    • http://gonakasuzoze.22web.org/42792538126.pdfIn PDF document text
    • https://cdn.sqhk.co/lutaxudepoje/RJ015Q2/24227700060.pdfIn PDF document text
    • https://cdn.sqhk.co/xawowaguka/ajiCHjj/34980953856.pdfIn PDF document text
    • https://cdn.sqhk.co/niduzabunu/jieSjfk/53606029409.pdfIn PDF document text
    • http://creditreportfast.info/flight_simulator_games_mod_apkqs9qf.pdfIn PDF document text
    • http://poroda.site/future_will_affirmative_negative_int1jwyg.pdfIn PDF document text
    • http://loginwithfb.site/toxarakafikopisupigidangyoxd.pdfIn PDF document text
    • https://cdn.sqhk.co/pedajobu/higjitI/vanilla_ice_cream_cake_recipe_video.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kekepujubulegev.epizy.com/gipajadopazofekimegel.pdfIn PDF document text
    • http://jawevobafepen.epizy.com/my_autograph_sudeep_movie.pdfIn PDF document text
    • http://kodadus.epizy.com/cisco_packet_tracer_6._2_netacad.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/zemexo.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/31775565679.pdfIn PDF document text
    • http://dilexaluv.epizy.com/free_grid_template_columns.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/muritujer.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_off0000bcd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCD1 5896 bytes
SHA-256: 882eb57d91fe7b51d724dbe96f1562a2584e5bb018699cc36c87814bb8451e2a
font_01_sfnt_off0000d0e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E5 10108 bytes
SHA-256: 6041b80df07b961226831a244848230d0c408a6afbe5e1095fc3ff0c7ebc72d3