Malicious PDF — malware analysis report

Static analysis result for SHA-256 33d3be72e835d9ca…

MALICIOUS

PDF

71.2 KB Created: 2021-03-03 18:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3de7953046f5d5bb86025fb7052eb55a SHA-1: 03ee2039d03526e73ca962bb4488731be32f5163 SHA-256: 33d3be72e835d9ca14d09b65db26a9e78f4de66a64b2ab491c6e8d46d8a565c1
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://pelibifir.ru/wix?keyword=skyrim+special+edition+prima+guide PDF link annotation
    • https://cdn.sqhk.co/porekige/ENkjghg/wubetegilogejugisexamiz.pdfIn PDF document text
    • http://degakak.sportsontheweb.net/8773056317.pdfIn PDF document text
    • https://cdn.sqhk.co/bojiluxenome/fa6ifoO/service_professionals_jobs.pdfIn PDF document text
    • http://nomevufaneboja.mypressonline.com/is_the_peaceful_warrior_a_true_story.pdfIn PDF document text
    • http://galosidijixiwu.mypressonline.com/baby_trend_sit_and_stand_lx_manual.pdfIn PDF document text
    • https://loseseseveru.weebly.com/uploads/1/3/0/8/130813975/giwewakim.pdfIn PDF document text
    • http://vadosaj.getenjoyment.net/el_principito_pelcula_completa_en_espaol_1990.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/6901129624.pdfIn PDF document text
    • http://dufifudusimube.mygamesonline.org/fuxuwonivetabiraja.pdfIn PDF document text
    • http://gemubanabugawa.mypressonline.com/60938589817.pdfIn PDF document text
    • https://gisoroweri.weebly.com/uploads/1/3/4/8/134893792/motagiliriru.pdfIn PDF document text
    • https://cdn.sqhk.co/wupefukawis/ljcjb3Z/41721178416.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/MSBjfqH/the_new_gate_anime_planet.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/Sgc4Hpl/care_home_deputy_manager_salary_uk.pdfIn PDF document text
    • https://rinadulig.weebly.com/uploads/1/3/0/7/130739308/favozotigipile-maduwibula-jupufakuwatu.pdfIn PDF document text
    • https://cdn.sqhk.co/walamalesumi/d0igieQ/super_snakes_centipedes_millipedes_attacking.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ninanupazazudad.rf.gd/informatica_mdm_interview_questions_and_answers.pdfIn PDF document text
    • http://suregemebibu.rf.gd/37729778431.pdfIn PDF document text
    • http://fazobelo.onlinewebshop.net/noraz.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_off0000d808.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD808 5660 bytes
SHA-256: 41d87b4fc1c1275bf9f3ccd44a62084c1caba6890d8742c1e44941617566368c
font_01_sfnt_off0000eb46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB46 10568 bytes
SHA-256: e7669cda2719b2566c2fa120b14e008460b8b1a764bd9063e60d7c0de1fe860b

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