Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ba75323de743a22…

MALICIOUS

PDF

72.9 KB Created: 2021-04-24 12:21:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 75e99f01bba2fe21af9a287d6901a204 SHA-1: 71fe925496affaf2d39ff58842eb03791df766b9 SHA-256: 4ba75323de743a22c0ce135f8e7ca40cbf7e3e49d8cc6a78408c6daa4223d411
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 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/strik?utm_term=computer+networking+full+course+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4456399/normal_5ffabd5fbb825.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478422/normal_602e364eadd47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492257/normal_603cb035a9f72.pdfIn PDF document text
    • https://cdn.sqhk.co/divoxisig/ijdggQH/regigo.pdfIn PDF document text
    • https://cdn.sqhk.co/nutewakizi/NhhRhgX/verizon_phone_number_meridian_idaho.pdfIn PDF document text
    • http://dotenipago.medianewsonline.com/73879691809.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/eihibNU/bauderflex_dna.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446174/normal_605c8538a853e.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/lNigvjC/gilapijuzizurebipasukiwug.pdfIn PDF document text
    • https://cdn.sqhk.co/xororofomed/gfYuPGG/nukovuxowanet.pdfIn PDF document text
    • https://cdn.sqhk.co/vadezewe/8hhigji/59219645839.pdfIn PDF document text
    • https://cdn.sqhk.co/wesifarajaru/ideFjh6/87426194178.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5ff9a41ea669b.pdfIn PDF document text
    • https://cdn.sqhk.co/kakolutezegu/fhjhagd/alpha_bravo_charlie_episode_11.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/suxosotaboxajepure.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/79678913272.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/in_the_bleak_midwinter_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/7155971378.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/income_summary_is_a_temporary_account_only_used_for_the_closing_process._true_false.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/2580129878.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxalowafokuvo/basic_electrical_engineering_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/resabomibogodaw/hamlet_by_william_shakespeare_character_analysis.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_off0000e0fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0FD 5328 bytes
SHA-256: 175c91bff9001f8640a04d652ef2125cdfa8aaf67fb7c855a210ab7a7bdb6146
font_01_sfnt_off0000f325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF325 10388 bytes
SHA-256: 9ffb45884f039bb65218b2ec98328a4b281260f097b7074ecd3c3567d8e07963

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