Malicious PDF — malware analysis report

Static analysis result for SHA-256 54777ea9174ad32f…

MALICIOUS

PDF

70.2 KB Created: 2021-02-15 01:04:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ad00539ba1158396aa6b1a455bb34b4d SHA-1: 7d8de0e913d8750013f4cf4bc7ff94c406a3d999 SHA-256: 54777ea9174ad32fec1affe44f111922cbac40644c35dfb8bfb87278ca1d678c
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/wix?keyword=mixing+primary+light+colours PDF link annotation
    • http://maturibcgj.space/traeger_ironwood_650_assembly_instructionsxxw3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421474/normal_5ff461feec819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467926/normal_601af2416f944.pdfIn PDF document text
    • http://idealslimitalia-official.site/combining_like_terms_practice_sheetza9rv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384050/normal_5ff03712c020c.pdfIn PDF document text
    • http://easterthjg.com/csula_ab540_formyw353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467325/normal_602211623dced.pdfIn PDF document text
    • http://domastmsk.space/new_york_city_night_day_protests_mondayl5acd.pdfIn PDF document text
    • http://yesnutural.space/english_to_urdu_vocabulary_listgtj57.pdfIn PDF document text
    • http://vvinorama.website/counter_strike_source_modern_warfare66g5t.pdfIn PDF document text
    • https://cdn.sqhk.co/mosugukasiba/OhdKxgf/emergency_dental_services_charlotte_nc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420915/normal_5fce32e93a944.pdfIn PDF document text
    • https://cdn.sqhk.co/numanazolov/ghfyHgd/41944566386.pdfIn PDF document text
    • http://helper-badges.com/site_de_piratage_msp_mot_de_passendsn2.pdfIn PDF document text
    • https://cdn.sqhk.co/fusexabuvej/jhiYhhi/electrical_circuit_symbols_quiz_ks2.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/bipepezuwed/tetesaworipodotubugefu.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/reziremofe.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/c_class_design_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/50353231412.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/hypothyroidism_diet_plan.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_off0000d5fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FB 5520 bytes
SHA-256: 8257aaf99a43bbf6aba6eb899e9ed7e2205a66d6002a50f82a2a439b0b6e2579
font_01_sfnt_off0000e8b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B4 10240 bytes
SHA-256: e134b1de6e1b81539c6bcf8c525591ce040c17e04533a166c69a765874f56f9b

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