Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cd783479de30202…

MALICIOUS

PDF

79.1 KB Created: 2021-03-27 18:33:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 98f563aa7eca0a63c83dcf474a46ee33 SHA-1: 134685d9473ca7c9eb346e5c05d7e51f64856b61 SHA-256: 7cd783479de30202666ea6fe1635496cc89166d5061c8245200cb248fcddea1c
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://seumenha.ru/123?utm_term=android+os+tv+review PDF link annotation
    • http://dikegebe.mygamesonline.org/jimoza.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/cwdkfsE/76630300277.pdfIn PDF document text
    • https://cdn.sqhk.co/lofopapenow/q1gdejb/ccure_9000_installation_guide.pdfIn PDF document text
    • http://rolapisi.scienceontheweb.net/algorithms_4th_edition_solutions.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/hjFlgeo/kefipibuxe.pdfIn PDF document text
    • http://ribadubeko.scienceontheweb.net/blank_index_page.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/margin_of_safety_mechanical_engineering.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/pebegiwifoturesalokanok.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/ae70e9f8-6100-443d-bcd1-ec97543a7784/wutevidojulotukafoxov.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/solving_quadratic_equations_graphically_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/how_to_lose_weight_fasting_every_other_day.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/884f6ec5-f195-4b6f-a77f-8535b00dce03/kubejibi.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/mappa_agrigento.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/jalebi_game_kannada_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11aafefc-f058-4ba5-80c5-9886efdeb471/bijafaxapifa.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/crappie_fishing_report_lake_texoma.pdfIn PDF document text
    • http://jefiferinazubim.atwebpages.com/kulamejemup.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/fumeboselokubod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7b99055-c428-4833-ac42-bd88ba30e662/71940050128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29743a56-8837-4ab8-b0b0-0198f4167686/tuck_everlasting_figurative_language_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/wopajulifepazerobazom.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_off0000f80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80F 4716 bytes
SHA-256: e9a7be3f04b2d62a053fd8b8489e8d9b5c77270c6409f845d49f7ca4baf053a1
font_01_sfnt_off0001083f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1083F 11076 bytes
SHA-256: c0555647a8a8881bcb45b0a929b290c233f154391ec9ab6b6e4aed8e0863a078

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