Malicious PDF — malware analysis report

Static analysis result for SHA-256 af51da142a56e1d8…

MALICIOUS

PDF

67.7 KB Created: 2021-02-24 22:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: fedde4054ca544fb359e799cf2645010 SHA-1: 7999b466833d99bfdace4c80703f5613994743ca SHA-256: af51da142a56e1d852f81883dcaec85e6f5cb0fbbca57495dc48e15a97ee761d
126 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
  • 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=food+inc+movie+answer+key PDF link annotation
    • https://cdn.sqhk.co/pesenexur/bwjeUic/vubatovozozixakij.pdfIn PDF document text
    • https://cdn.sqhk.co/miropefaneka/4KliaxI/rolled_ice_cream_vancouver_wa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379471/normal_5ff171660e519.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_602f50a22081b.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/gitclG3/87306962049.pdfIn PDF document text
    • http://zikapipumimapo.22web.org/davaxipukezoz.pdfIn PDF document text
    • https://cdn.sqhk.co/regisanozoxo/fFljjhc/crafting_and_building_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/xgcVKgc/new_messenger_2020_logo.pdfIn PDF document text
    • http://xonibiz.22web.org/antivirus_android_gratis_avira.pdfIn PDF document text
    • https://cdn.sqhk.co/gegojagakexu/jhbbgi3/real_gangster_crime_game_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/bupusudiva/dQjgjij/bemenozogoguxelezot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409118/normal_5fe6862b7bd5e.pdfIn PDF document text
    • https://cdn.sqhk.co/satofurijob/e0Wvhbd/mabujoxawexubid.pdfIn PDF document text
    • http://netubekebusis.iblogger.org/91347681814.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nilidori.rf.gd/guvasaduwutaz.pdfIn PDF document text
    • http://fudewisukot.rf.gd/rukukilamodasu.pdfIn PDF document text
    • http://fiwimawa.rf.gd/causal_definition.pdfIn PDF document text
    • http://rimutapewite.rf.gd/abnormalitas_telur.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_off0000ce6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6A 5328 bytes
SHA-256: 8511895a9d4584ae275b30d91512d50ac89f4ed8a70fddd918c399009413e381
font_01_sfnt_off0000e08c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08C 9828 bytes
SHA-256: 4f06f36889064571aca2e961334ff871c746b3cf3d2ba76b78b511a304d091b4