Malicious PDF — malware analysis report

Static analysis result for SHA-256 59920758c97a8bbb…

MALICIOUS

PDF

73.2 KB Created: 2021-02-20 11:27:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: daa0e86d9141a3cf2bd568b9786be3d8 SHA-1: 0b68092b1f393e1120aecc5496a195a56564ba26 SHA-256: 59920758c97a8bbb78d2dd85873b034be0fded5a35dda9ca527f90c7887ed802
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://crophysi.ru/wix?keyword=sample+letter+to+close+bank+account In PDF document text
    • https://cdn.sqhk.co/letonolomo/ia1poUJ/xarepixilewil.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxaroposa/hghdibQ/47937296903.pdfIn PDF document text
    • https://cdn.sqhk.co/farafakilof/Yjeghjb/copper_prices_today_per_pound.pdfIn PDF document text
    • http://juwatorota.22web.org/busuu_apk_indir.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/tulosa/kendo_mvc_grid_filter_template_column.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/algebra_1_graphing_linear_equations_worksheet_answers.pdfIn PDF document text
    • http://sizabimavifa.rf.gd/lion_king_original_broadway_cast_recording.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/67551330988.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/edexcel_gcse_pe_revision_guide_online.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/atari_800_roms_pack.pdfIn PDF document text
    • http://wigezenefibi.epizy.com/84325916616.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/professional_assembly_language_portugues.pdfIn PDF document text
    • http://vufagozujidivu.epizy.com/dakuf.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/17195957230.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/flor_de_leyendas_alejandro_casona_gratis.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_off0000e37f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37F 5384 bytes
SHA-256: 59df17a7956f729ea0826a3719e617783a4b6c93a23016d29802af856aa51e3c
font_01_sfnt_off0000f5b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B2 10052 bytes
SHA-256: 2b189b087a685b180937dce4b12e0bf9bf5f84c6c6b3ea46b4f36ed955796add