Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1dfe9b8bff28dd0…

MALICIOUS

PDF

72.4 KB Created: 2021-02-28 06:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8f830e2f1b97c854fa0acea278020480 SHA-1: b6782542d650a7ddf63ef19e853f46540b460120 SHA-256: e1dfe9b8bff28dd0a094e5397770144acf0305886a838561f72f41c0d1ed3eed
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through a deceptive link, possibly related to a phishing lure for music downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gimoguvi.ru/strik?utm_term=pad+band+dj+song+mp3+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479678/normal_601e2cf6c562b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414491/normal_5fe6a85616bae.pdfIn PDF document text
    • https://cdn.sqhk.co/wulozonixuf/kicifjb/free_fall_calculator_with_steps.pdfIn PDF document text
    • http://ninotekega.mygamesonline.org/craftsman_gt5000_mower_parts.pdfIn PDF document text
    • http://the-glow.ru/44868664956uzjh9.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/why_is_my_fridge_freezer_leaking_water_underneath.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370530/normal_6033d80f872af.pdfIn PDF document text
    • https://cdn.sqhk.co/xelajuwodaf/gfjagjs/x-_core_hunter_sprinkler_manual.pdfIn PDF document text
    • http://mon-cmso.best/old_school_pizza_hut_lightwv2h7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445558/normal_602a2efe824d1.pdfIn PDF document text
    • http://ppl-nutrshopfit.website/georgia_on_my_mind_trombone_sheet_music5q4e2.pdfIn PDF document text
    • http://aduo5.online/4697745232151xw4.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/punurum/coway_ap-1512hh_filter_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/roman_numbers_1_to_1000.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/fesewelilutupoguzevojisu.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/which_justices_voted_for_the_majority_in_brown_vs_board_of_education.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/bomgar_support_client_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/44041825037.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_off0000ddf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF6 5656 bytes
SHA-256: 309f15cef9a3f92991a4176a2d4c36219d02cfc40a8105c29d1a9897b1ad1e5b
font_01_sfnt_off0000f137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF137 10204 bytes
SHA-256: 487593505053040ae0b89c8c1b868838e78c8e8f6d36d51a67af2116b6a83da2

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