Malicious PDF — malware analysis report

Static analysis result for SHA-256 907ad2df3470033d…

MALICIOUS

PDF

79.8 KB Created: 2021-03-17 04:26:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 28b191002bc2062065ea9ff4d7a673b3 SHA-1: 93e0975379ac6982c59f3640dbeeb9dfa9e3c646 SHA-256: 907ad2df3470033d27d75c2dd64a3f4a3e80ecf9854d4f1a78752462079a6dd3
104 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 presents a deceptive download button. 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dafemum.ru/strik?utm_term=the+wonder+weeks+chart+toddler PDF link annotation
    • http://mobufuwiwid.medianewsonline.com/best_classes_diablo_3_season_22.pdfIn PDF document text
    • http://paselon.getenjoyment.net/89625628446.pdfIn PDF document text
    • http://xenotobewaf.22web.org/jomowiwenidutoga.pdfIn PDF document text
    • http://gordei2d.com/video_show_pro_apk_uptodown2l38m.pdfIn PDF document text
    • http://namelesssouth.xyz/126638440269840o.pdfIn PDF document text
    • http://beririka.scienceontheweb.net/what_is_leave_travel_allowance_in_salary.pdfIn PDF document text
    • http://lenudes.com/jobs_occupations_and_professions_exercisestsvrn.pdfIn PDF document text
    • http://kulotufiw.mypressonline.com/81121618093.pdfIn PDF document text
    • http://gajaxujifusokul.mygamesonline.org/baba_balak_nath_chalisa.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/bolt_nut_and_washer_size_chart.pdfIn PDF document text
    • http://datinge.site/dobefefekefazujusexoruq8cqf.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
    • http://fekamenuzexogam.epizy.com/jixivemuzima.pdfIn PDF document text
    • http://kenasaxoxaxober.rf.gd/petty_cash_log_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/auto_chess_apk_0._1._7.pdfIn PDF document text
    • http://giverez.epizy.com/company_presentation_template_indesign.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/how_to_refill_epson_ink_cartridges_702.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/sample_certificate_of_insurance_acord_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/american_heart_association_new_hypertension_guidelines_2017.pdfIn PDF document text
    • http://pevivudawof.epizy.com/open_office_spreadsheet_functions_list.pdfIn PDF document text
    • http://wujenavilaga.rf.gd/tipos_de_formatos_de_archivos_de_video.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_off0000ecd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD4 4872 bytes
SHA-256: 348038330ca6c0dc618583e6997366f538105429033ac96da2b0c7d16852c629
font_01_sfnt_off0000fd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD62 10932 bytes
SHA-256: a6c63ec51f5b3daa7184df82960cefa261ae5e9b420634f5f8aeaf864631f9cf
font_02_sfnt_off00012279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12279 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f