Malicious PDF — malware analysis report

Static analysis result for SHA-256 20b3656e6217213e…

MALICIOUS

PDF

65.0 KB Created: 2021-02-14 11:56:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 6470de6b88627c2dfae0bb431eb1f79b SHA-1: 7e0ed90d17ea8952b8bc3413d1a4b72bd3d5b554 SHA-256: 20b3656e6217213e7e54201841d1eaaac139f50027ec01dc97f3159f59503a92
136 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
  • 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.
  • 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://seumenha.ru/wb?keyword=juices.%20cc%20music PDF link annotation
    • http://naturfresh.fun/zipanozupobevalu81gnw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414357/normal_5ff25202d4405.pdfIn PDF document text
    • http://pozebesibi.22web.org/11783131327.pdfIn PDF document text
    • http://xofajenakimexo.iblogger.org/front_end_design_templates_free.pdfIn PDF document text
    • http://italiahot.space/nurifaw49i4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465949/normal_601c6b43283db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383156/normal_5ff650d1f1105.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495042/normal_5fc9257e05e32.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/tizowodifi/57758375122.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/probation_review_meeting_letter_template.pdfIn PDF document text
    • http://pedijuwugeta.rf.gd/vupexi.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/8_hour_diet_plan_cheat_sheet.pdfIn PDF document text
    • http://sipofepusadofas.rf.gd/aaja_ni_aaja_song_djyoungster.pdfIn PDF document text
    • http://jamurujitexezi.epizy.com/anova_sous_vide_owners_manual.pdfIn PDF document text
    • http://laguzovola.rf.gd/gidefojidijitusugukez.pdfIn PDF document text
    • http://reboronunupofit.epizy.com/python3_regex_cheat_sheet.pdfIn PDF document text
    • http://gezojetisab.epizy.com/seaweed_sheet_mask_body_shop.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/formato_certificado_medico_escolar_para_imprimir.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_off0000c425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC425 4628 bytes
SHA-256: b2b0952a4a4820d60d3e8a79760585011d598ff6ca118be5db6402528cadac02
font_01_sfnt_off0000d3dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3DD 10436 bytes
SHA-256: 6988c83f9892f8fa07125bcfdd1579e36abc60a5098dc5872b90596879dcebaa