Malicious PDF — malware analysis report

Static analysis result for SHA-256 33cdff57acebc5da…

MALICIOUS

PDF

72.2 KB Created: 2021-02-07 16:41:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4403de9aaca0108e30e07b94a458f655 SHA-1: 0a0324c51c55f275415ed1151cd166ca9ca8ed24 SHA-256: 33cdff57acebc5daea80030479fa1e475d5f5f9966fa0a30c16e5c699eb55cdc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wb?keyword=adobe%20indesign%20training%20manual%20pdf PDF link annotation
    • http://manthoughtswebsite.website/998608310635n6c5.pdfIn PDF document text
    • http://raicen.com/underhanded_tactics_list5n41x.pdfIn PDF document text
    • http://akillidestekbasvuruformu.online/jalumijiwidipekirafoml9r7.pdfIn PDF document text
    • http://rmk4sale.xyz/grafcet_niveau_1bqdzx.pdfIn PDF document text
    • https://pijatopug.weebly.com/uploads/1/3/5/3/135303623/e34c12cd8173.pdfIn PDF document text
    • http://drnextact.xyz/campbell_biology_11th_edition_free_download_redditunwbx.pdfIn PDF document text
    • http://scriptbook.xyz/ikea_billy_cagekxq8j.pdfIn PDF document text
    • http://christmas-gift.ru/european_commission_interinstitutional_style_guidepdqqc.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/resumen_del_libro_la_revolucioncitac4djr.pdfIn PDF document text
    • http://hellesypakk.online/free_printable_attendance_forms_for_teachers30rie.pdfIn PDF document text
    • http://rkconstructionsucks.com/cloudformation_s3_bucket_policy_multiple_statementsw2j3u.pdfIn PDF document text
    • http://organic100.fun/types_of_chemical_reactions_answersg8xay.pdfIn PDF document text
    • http://naturaitalia.space/santa_restaurant_cooking_games_downloadra0aa.pdfIn PDF document text
    • http://xsale.trade/pipapaxepkdxy.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/lepefi/97256393937.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_off0000df20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF20 5492 bytes
SHA-256: 314b694579a399a01f16b0e99ad4951e17c1bbb237327ae94ca6df2c22819069
font_01_sfnt_off0000f1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B0 10152 bytes
SHA-256: 33cacbae3ad6fa6ca93d705bec73479d7e525396b964671cbdb59faf238e240f