Malicious PDF — malware analysis report

Static analysis result for SHA-256 5502cc08db7cbd2c…

MALICIOUS

PDF

73.1 KB Created: 2021-02-26 08:38:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 83bc1c7039126f476f791339c4ba49cc SHA-1: 3cb8c8bfe199cf452052a3452596abc2c685dd2b SHA-256: 5502cc08db7cbd2cc231ce10f89c947b251b71ab3f2437f304b5402c6067afc9
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://bologen.ru/wix?keyword=rooster+answers+word+whizzle+search PDF link annotation
    • https://zififawatef.weebly.com/uploads/1/3/4/3/134384507/fugogolakonavuv_tawejomej.pdfIn PDF document text
    • https://cdn.sqhk.co/joxutedunik/hdCTcWh/wefidiseluxaduverof.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/igjE8W9/shadowlands_alchemy_trinket.pdfIn PDF document text
    • https://cdn.sqhk.co/fetedudi/bgf5laJ/betosew.pdfIn PDF document text
    • https://cdn.sqhk.co/tarozawowe/kVigMhi/rejowesu.pdfIn PDF document text
    • http://famozosivupiwij.sportsontheweb.net/kibagetolimizuketa.pdfIn PDF document text
    • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/d3adcbeaf359a.pdfIn PDF document text
    • https://cdn.sqhk.co/pukikojat/rLHifgc/58253136263.pdfIn PDF document text
    • http://topcreditreport.info/brother_hl3170cdw_toner_reseti0suw.pdfIn PDF document text
    • https://paparudedolenod.weebly.com/uploads/1/3/4/6/134686514/retisuvug_niwin.pdfIn PDF document text
    • http://zakewabo.scienceontheweb.net/casio_collection_mens_watch_w-735h.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/whdKVuu/tip_top_barbershop_ridderkerk_prijzen.pdfIn PDF document text
    • https://tubolapibakosi.weebly.com/uploads/1/3/4/8/134872187/4490799.pdfIn PDF document text
    • https://cdn.sqhk.co/losomilodip/ijAghTT/3398054590.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pozidijapepore.atwebpages.com/2013_bmw_328i_xdrive_maintenance_schedule_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/passport_photo_maker_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/bal_hanuman_movie_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/first_day_of_school_chalkboard_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/94357785579.pdfIn PDF document text
    • http://livirava.atwebpages.com/the_book_of_the_courtier_significance.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_off0000e340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE340 5176 bytes
SHA-256: b37d8bd61630b99583d682c0963fbeadfd776d50f9c668b4b66de1a00554af9c
font_01_sfnt_off0000f4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EF 10004 bytes
SHA-256: ce346b793159662107fff1cbf98354a815341e8ea497de16f3f5d11d46002b16

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