Malicious PDF — malware analysis report

Static analysis result for SHA-256 906466d8994ee054…

MALICIOUS

PDF

78.0 KB Created: 2021-04-08 16:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: be57ecf5d99a177c660901c25d69ddf3 SHA-1: 9ae5db0becc519b185290562ec152c8140849207 SHA-256: 906466d8994ee054dade6fe8ee23cfae7c63eeaf73e33d0d46f9a724c0f5a616
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 0.9997

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
  • 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://druttle.ru/strik?utm_term=how+to+get+procreate+pocket+for+free PDF link annotation
    • http://zobotalemogi.sportsontheweb.net/ponokajen.pdfIn PDF document text
    • https://mewejubakokexal.weebly.com/uploads/1/3/2/6/132681976/puvupabubef_gutowofegeju.pdfIn PDF document text
    • http://zozavelomidabi.scienceontheweb.net/antiemticos_en_el_embarazo.pdfIn PDF document text
    • http://lozomaneje.getenjoyment.net/tewidaxolikikunurezuxuwi.pdfIn PDF document text
    • http://nalodorepuwag.getenjoyment.net/libro_de_aprendizajes_clave_quinto_grado.pdfIn PDF document text
    • http://wotaxatumumodok.sportsontheweb.net/camaro_2010_price_in_uae.pdfIn PDF document text
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/31dfe.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/how_to_change_code_on_kwikset_smartcode_916.pdfIn PDF document text
    • https://siropenisawad.weebly.com/uploads/1/3/4/3/134353493/wewefezevowi.pdfIn PDF document text
    • https://konozobit.weebly.com/uploads/1/3/4/4/134456152/f67e1cd240d.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/zeworibuzoza/83185847876.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/loxurodowuzoso.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/muxujaziwomalipudewepaf.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/budget_forms_excel.pdfIn PDF document text
    • http://xedemigu.atwebpages.com/alfabeto_coreano_hangul_completo.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/bouncer_temporary_app_permission_free.pdfIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/61228031972.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/rubekisemoto.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/saviwa.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/free_spinner_template.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/kenmore_sewing_machine_repair_manuals.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_off0000f0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D6 5092 bytes
SHA-256: 09519397266e9855e286faddafc27e3d5779b4a42b121f4d1e7fc3094cd3b347
font_01_sfnt_off00010258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10258 11844 bytes
SHA-256: 2408846c54cfc78e9fbe4c5b32c0c9315531c609eaaa99e7fd3711b636adde69

Open this report in the interactive analyzer, or submit your own file for analysis.