Malicious PDF — malware analysis report

Static analysis result for SHA-256 2476b7f78ffb98e6…

MALICIOUS

PDF

67.4 KB Created: 2021-02-23 00:12:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 639a7167a43116933429f8281fec811e SHA-1: 024d846bca9e293d59918783ac32906240ac02f3 SHA-256: 2476b7f78ffb98e6dae26006fed04347794f53a7eaf841d01ec23fa484736ec0
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://jacksth.ru/wix?keyword=the+rise+of+islam+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/navuwamas/gdjbSfT/fafojigejogamunofu.pdfIn PDF document text
    • https://cdn.sqhk.co/moxulofilose/Zgekiij/bonolavezenimuf.pdfIn PDF document text
    • https://nevutero.weebly.com/uploads/1/3/4/7/134716167/latoma.pdfIn PDF document text
    • http://fito4ka.xyz/beyblade_burst_app_mod_apk_6._3._04ai4c.pdfIn PDF document text
    • https://binigikuvoloxog.weebly.com/uploads/1/3/5/3/135332024/03dfa698703d.pdfIn PDF document text
    • http://stingeksoj.online/download_game_super_mechs_mod_apk2nx4h.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/YjjiEdj/64968700245.pdfIn PDF document text
    • http://anarchymedya.com/dress_patterns_formal3e3q8.pdfIn PDF document text
    • https://susejovidexoxi.weebly.com/uploads/1/3/0/7/130775922/b5b1648.pdfIn PDF document text
    • https://gizizajavime.weebly.com/uploads/1/3/2/6/132695742/zebavapoboka-mavunot.pdfIn PDF document text
    • https://sovokuragul.weebly.com/uploads/1/3/2/8/132814371/kedeviligopazoxut.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/mission_analysis_brief_examplehmilg.pdfIn PDF document text
    • https://nebowepef.weebly.com/uploads/1/3/4/4/134483035/pizawul.pdfIn PDF document text
    • https://xalitizamer.weebly.com/uploads/1/3/4/8/134863297/tegunujuwonuwawez.pdfIn PDF document text
    • https://xodamizefolan.weebly.com/uploads/1/3/6/0/136052243/xemadazufat.pdfIn PDF document text
    • https://fubafutevulaz.weebly.com/uploads/1/3/1/8/131856433/jogojonedadivo_vuwasulod.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_off0000cd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD06 5112 bytes
SHA-256: 4a16a5c8297a06b9e2a598602d4badb35dc54c74c8945040f915a6bfbbef6dc6
font_01_sfnt_off0000de4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4D 9980 bytes
SHA-256: a3d1026dc47d9595d6a4ef07a8a3417a58dc49f6319cc82f055faa80569ba16b

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