Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc7a050c326eecd…

MALICIOUS

PDF

75.3 KB Created: 2021-03-08 03:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: a96ad694b3ad8413532f3766d71fd898 SHA-1: ed355b0037b3e92a1960902ce866370aa0021976 SHA-256: 7bc7a050c326eecd391ccccbe423ffaba0b4c8ad7b227c74ee8a96a7b82a1c99
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that, when visited, likely leads to a phishing or malware download page. The document body, though heavily obfuscated, contains keywords related to printer toner reset, suggesting a lure to trick users into clicking the malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/123?utm_term=brother+hl-5470dw+toner+reset PDF link annotation
    • http://jasazotinalol.mygamesonline.org/78049707720.pdfIn PDF document text
    • https://cdn.sqhk.co/fapulelenuvi/z27ihhi/crazy_frog_game_ringtone.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvuvidova/8QGhehi/peretaxipedaz.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/best_stock_for_2020_reddit.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/sennheiser_rs_175_headphones_australia.pdfIn PDF document text
    • http://gedatidigog.sportsontheweb.net/directv_remote_control_stopped_working.pdfIn PDF document text
    • https://cdn.sqhk.co/luwonowuwig/LNajeVX/bibliography_formatting_apa.pdfIn PDF document text
    • https://cdn.sqhk.co/lagusive/CChigdo/science_in_english_class_10th.pdfIn PDF document text
    • https://cdn.sqhk.co/binebelezux/idDiggf/87034528529.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/the_fall_of_the_house_of_usher_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/povewepalu/cwifibi/gibereloxijivuroxexeba.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/vuterijoze/cambridge_book_9_listening_test_2_answers.pdfIn PDF document text
    • http://pexevogawi.epizy.com/report_builder_expression_datediff.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/titawawut.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/dokanar.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/checkmarx_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/zopoxepizoditubeja.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/looper_2012_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/sazinagatuji.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/everglow_bon_bon_chocolat_album.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/element_compound_mixture_worksheet_high_school.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/streetcar_named_desire_themes_and_symbols.pdfIn PDF document text
    • http://sudewepizetego.epizy.com/69480507746.pdfIn PDF document text
    • http://durunorutap.epizy.com/najefexuzewetorobatesoko.pdfIn PDF document text
    • http://bosadubarelazu.rf.gd/agumon_baby_form.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_off0000ea48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA48 5308 bytes
SHA-256: 16d1184b32cbd436c897eae4f578f92d17e5e8bbc8aee2fb179a8ed183b627a5
font_01_sfnt_off0000fc7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7D 10328 bytes
SHA-256: 8864378c52fa6a00994c92fd826c64151cdca303e876902837ba438552453328

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