Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c1fc8f2d00d15a…

MALICIOUS

PDF

73.2 KB Created: 2021-03-03 21:58:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e44db558355c9e6182d8c97a8e413e0d SHA-1: 88b4a221ab1c54546ff4644d6b1c18ac5c6d7699 SHA-256: 45c1fc8f2d00d15af6047460786184716041b562feae266ab8c385205dcbc5d8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jumiwimov.ru/award?keyword=is+the+wow+computer+any+good PDF link annotation
    • http://bagerisevi.scienceontheweb.net/the_5th_wave_age_rating.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487662/normal_601b314d5df3e.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/gawaxekabimidodamemi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466367/normal_60248aff8c3e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_601cb4e2df3cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369781/normal_603edda225fdf.pdfIn PDF document text
    • http://zatoxuvisovapuf.sportsontheweb.net/how_much_time_to_give_someone_to_write_a_letter_of_recommendation.pdfIn PDF document text
    • http://nitanupemil.mygamesonline.org/the_practice_rooms_exeter.pdfIn PDF document text
    • http://ideal-it.fun/latolexewopijavakoau1.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/the_wifes_lament_poem_annotation.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/62256089212.pdfIn PDF document text
    • http://invitesistem.ru/sodium_phosphate_monobasic_monohydrate_safety_data_sheeth549v.pdfIn PDF document text
    • http://it50discount.pro/10839777572nqbur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duxepivol.myartsonline.com/how_to_troubleshoot_a_central_air_unit_cost.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_off0000e21e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21E 5584 bytes
SHA-256: 1d56db829a75c7bb431b80f0c16409d3c9972e41267db3b9d0b589b83d7731c1
font_01_sfnt_off0000f50d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50D 10152 bytes
SHA-256: d0c4682f6e70eee3c73423b484a80bc71481f0ed8ebc5440687939ed362f899c