Malicious PDF — malware analysis report

Static analysis result for SHA-256 46ce53facf6db4bd…

MALICIOUS

PDF

77.3 KB Created: 2021-04-11 18:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9124927179a6866f73ad43b8e4a8764a SHA-1: 5808aff027c3f45b04374996ed6a9ec3312a15e7 SHA-256: 46ce53facf6db4bd7c4c648e044f792b407333d034c0cb85372ce2810559af67
126 Risk Score

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 0.9996

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://dugedepap.ru/strik?utm_term=microsoft+volume+licensing+login+error+code+e06 PDF link annotation
    • https://cdn.sqhk.co/vemetafije/gijOpjd/duck_shoot_game_toy.pdfIn PDF document text
    • https://cdn.sqhk.co/losomilodip/iUOMcZr/adventure_escape_mysteries_the_covenant_chapter_3.pdfIn PDF document text
    • http://nosumiva.mywebcommunity.org/intravascular_complications_of_central_venous_catheterization_by_insertion_site.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/wolokobisoxuxuriwi.pdfIn PDF document text
    • https://cdn.sqhk.co/konajera/ihdKfDE/93073232333.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/qCyRcJP/fdic_call_report_glossary.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/repakuretuwevewawe.pdfIn PDF document text
    • http://lurubalopare.sportsontheweb.net/algebra_grade_5_worksheets.pdfIn PDF document text
    • http://volulolusawaz.mygamesonline.org/sample_accounting_finance_interview_questions_and_answers.pdfIn PDF document text
    • https://zamigalimigarub.weebly.com/uploads/1/3/5/3/135326483/8370271.pdfIn PDF document text
    • https://motikefivenigem.weebly.com/uploads/1/3/4/7/134709332/borizupor-vukifaxitumutim-favipelono.pdfIn PDF document text
    • https://cdn.sqhk.co/pemoxeriko/wgegijh/azamara_quest_ship_details.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisunez/GghZu8p/dodowowejo.pdfIn PDF document text
    • http://fubikopelemom.mypressonline.com/curso_de_marketing_digital_online_gratis_com_certificado.pdfIn PDF document text
    • http://mobutadaxez.medianewsonline.com/vehicle_damage_check_sheet.pdfIn PDF document text
    • http://vosalax.22web.org/osteoporosis_elsevier.pdfIn PDF document text
    • https://becometIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zowomazo.epizy.com/fowarutidixi.pdfIn PDF document text
    • http://pajuzipoxebemo.rf.gd/mudanisanata.pdfIn PDF document text
    • http://nanaxidimidi.atwebpages.com/wikanizep.pdfIn PDF document text
    • http://ligekasuxube.onlinewebshop.net/pofowisijesupalebinitegef.pdfIn PDF document text
    • http://jipinasin.epizy.com/can_you_search_a_scanned_document.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_off0000ed41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED41 5492 bytes
SHA-256: dd6d85df1df6649c5fa97ec577d89a32000da059cd145ef7e315da2d90c1c113
font_01_sfnt_off0000fff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF5 12192 bytes
SHA-256: e9f0ac4ae09a9c4df3b16de30978ea952e0e088eb58e82ee8bd6080010544e35

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