Malicious PDF — malware analysis report

Static analysis result for SHA-256 618b903c4cdd5601…

MALICIOUS

PDF

79.5 KB Created: 2021-03-25 07:55:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6be784bbd42dfb402881e74f1cd45220 SHA-1: b22ddc0cb541d01f35798794a7425a12c4b296a7 SHA-256: 618b903c4cdd5601e4de5965713be82a839d95857c7b9fdd392bc6aa4d710fea
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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 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://ponafet.ru/123?utm_term=odia+new+movie+blackmail+full+song PDF link annotation
    • http://wazepewazivulil.mywebcommunity.org/tamil_jothidam_books_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nudogada/igqftVt/22506358689.pdfIn PDF document text
    • http://dawezedelofeda.scienceontheweb.net/cessna_172m_parts_list.pdfIn PDF document text
    • http://bexukavinawexov.mygamesonline.org/junidefapa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461767/normal_5fee6234d2b65.pdfIn PDF document text
    • https://mowavowami.weebly.com/uploads/1/3/4/5/134591552/5169512.pdfIn PDF document text
    • http://pivolirarorip.mypressonline.com/como_agua_para_chocolate_laura_esquivel_english_translation.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/effect_of_sugar_on_yeast_fermentation_experiment.pdfIn PDF document text
    • http://wivevemeb.scienceontheweb.net/cambridge_igcse_computer_science.pdfIn PDF document text
    • https://tezugigawezen.weebly.com/uploads/1/3/4/8/134878192/jibobud-muruleduri.pdfIn PDF document text
    • https://cdn.sqhk.co/zuronenom/hjhdJij/hyperspin_arcade_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/fepotifomowa/boicxt2/bollywood_party_song_2019_mp3_free_download_pagalworld.pdfIn PDF document text
    • http://torixewiser.medianewsonline.com/39092871382.pdfIn PDF document text
    • http://kafofal.mygamesonline.org/97102834358.pdfIn PDF document text
    • http://resipowepo.getenjoyment.net/sales_director_interview_questions_and_answers.pdfIn PDF document text
    • http://suziterunedoloj.sportsontheweb.net/how_many_calories_in_a_krispy_kreme_original_glazed_doughnut.pdfIn PDF document text
    • http://xasanefajisa.sportsontheweb.net/52462071103.pdfIn PDF document text
    • https://cdn.sqhk.co/nakizenonetu/hb83jcZ/dragon_hunter_clicker_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_603728423c726.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/86a4a452e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kilarosine.atwebpages.com/61618036650.pdfIn PDF document text
    • http://kepofif.onlinewebshop.net/springfield_ar_15_stock_kit.pdfIn PDF document text
    • http://sazasewugekupej.onlinewebshop.net/98078417529.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_off0000f634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF634 5628 bytes
SHA-256: 5c8684d3c767899c496840c80b9d39f668503a79361efa866be5e78361a770bd
font_01_sfnt_off00010964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10964 11512 bytes
SHA-256: d1e338698ffd89fb1750a5075896775ab9908f7fc4c13d92e084c91cf90490de

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