Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3227181d624ab1c…

MALICIOUS

PDF

73.4 KB Created: 2021-03-28 10:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 005d7bed5d9184fa291361bc9b148c78 SHA-1: 10ff2f106ca3f7bdbe378b1fead26c20ed14cd10 SHA-256: f3227181d624ab1c2ccdb70f07ba6c4ae2c6d4d576601bc1eeafec313e8e547a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/123?utm_term=toefl+test+sample+questions+pdf PDF link annotation
    • http://nebuxopav.mypressonline.com/cursus_astronomie.pdfIn PDF document text
    • http://sokinabunerir.iblogger.org/mokep.pdfIn PDF document text
    • http://sovolox.getenjoyment.net/kulojafufinegarixozisox.pdfIn PDF document text
    • http://debagigitefofo.iblogger.org/luguvesuja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/54a46f67-f65b-4713-bf1b-3638965b6bc2/asesora_de_lactancia_materna_en_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/anglo_saxon_riddles_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/arthrobacter_globiformis_atcc.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/79683234055.pdfIn PDF document text
    • http://wokoxut.epizy.com/68118761213.pdfIn PDF document text
    • http://tewimovonuwakag.rf.gd/business_plan_for_small_coffee_shop.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/everlast_childrens_story_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/088644ee-b1fa-419a-b597-c82f3967b62c/nikipiwuneno.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/home_building_cost_estimator_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/public_administration_major_salary.pdfIn PDF document text
    • http://sirovorisolilu.rf.gd/nominative_case_of_nouns_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/tugogoniba.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/le_banquier_livre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2c46ae5-de7a-44ca-98e7-1911fd872898/99989047432.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/against_school_uniforms_debate_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/autel_code_reader_al319.pdfIn PDF document text
    • http://kobinegugagikag.epizy.com/842651744.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_off0000e36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE36F 5168 bytes
SHA-256: 41b24bf437b30c6f13f5e09f33e888fa7a90518d0e01d3785d89574a500871e9
font_01_sfnt_off0000f4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F3 10432 bytes
SHA-256: 88ca73e23875ce6ae771c3feaa71e3e51ab7ab0c07d96c7a48ec5bb2befdec57

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