Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48adcad3cb8ad95…

MALICIOUS

PDF

124.8 KB Created: 2021-03-07 02:43:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1dd56b71fcabf027b5f9953f6740664f SHA-1: 368fbea020fa32927d54777bbf32dc8ef8b17347 SHA-256: e48adcad3cb8ad954404b1fcf030f5b393460514d89ca37602b1d611e40a2e95
156 Risk Score

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 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 0.9998

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 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.
  • 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/wix?keyword=zillow+rentals+landmark+huntington+beach PDF link annotation
    • https://cdn.sqhk.co/mezadisedud/piVieif/99387576973.pdfIn PDF document text
    • http://gekewemujokode.22web.org/john_deere_model_l100_lawn_tractor_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/gebunemif/dowXVyD/street_basketball_half_court_rules.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/4iibxji/abstraction_in_mathematics.pdfIn PDF document text
    • http://bibunom.iblogger.org/twilight_saga_breaking_dawn_part_2_soundtrack_download_filmyzilla.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/7SBYlsF/airthings_wave_plus_accuracy.pdfIn PDF document text
    • https://cdn.sqhk.co/vinikawikuve/QaghyMf/train_sim_world_2_review_xbox_one.pdfIn PDF document text
    • https://cdn.sqhk.co/sobekalob/fPjiuQx/bladder_infection_home_remedies_apple_cider_vinegar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_d9ad0edb84fb44b5a31df5974120bfe5.pdf?index=trueIn PDF document text
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_07a1d88439a041e295be6bf73b773c2f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejifavo/power_bi_report_filter_or.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/52131451604.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/job_analysis_and_design_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/budgeting_calculator_spreadsheet_with_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/tebutepol.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/logo_quiz_level_7_answers_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/android_adapter_usb_device_driver.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19FF1 5488 bytes
SHA-256: fae9950e6e1399c1f37913b8c6d17fc77ab596162ae68a5705b5ca4a90e7dc92
font_01_sfnt_off0001b277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B277 10968 bytes
SHA-256: c02ee440d26ec1ff9b8df5cb064bd79669d6f8f4acbe01762d9fbb1f0b3a08b4
font_02_sfnt_off0001d772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D772 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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