Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0c33c942100a707…

MALICIOUS

PDF

79.2 KB Created: 2021-02-24 21:02:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 630b58d62ba10db9f4cdcd4ad7171481 SHA-1: e76d10288f4f4e7247f529b1b8f9a78551523e21 SHA-256: a0c33c942100a707f6f9268291d21cf772d9e04c69ce1c979fdff60e564e5ade
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://druttle.ru/award?keyword=scott+mccloud+understanding+comics+pdf PDF link annotation
    • http://paworupuwiwitew.iblogger.org/fireflies_piano_sheet_music_owl_city.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382627/normal_60172c56c5230.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371786/normal_5fe52752f3249.pdfIn PDF document text
    • http://xogumilagu.iblogger.org/76669704037.pdfIn PDF document text
    • http://dujufevotudamo.iblogger.org/auxiliary_storage_devices.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392872/normal_5fe96efa95f5d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418188/normal_601ef711b8f0c.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/xumakomowi/hubspot_content_marketing_certification_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/fuzemosumakasimixir.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/information_about_bsc_interior_design.pdfIn PDF document text
    • http://wutugegazebezop.rf.gd/telugu_bible_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/lexisnexis_law_prediscovery_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/what_miracles_did_god_perform_in_the_bible.pdfIn PDF document text
    • http://gipanigiwulaj.epizy.com/dodoxerumelawapaxisimuzo.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/cymatics_omega_production_suite_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/evaluating_algebraic_equations_worksheets.pdfIn PDF document text
    • http://nuzuxuzenexeku.rf.gd/escuela_superior_de_inteligencia_emocional_y_coaching.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/zuvedofurike.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_off0000f80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF80B 5580 bytes
SHA-256: 19eebaa675dce07757d896122392ef84798a0f68cac6a070b21f3f9b04212341
font_01_sfnt_off00010aef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AEF 10656 bytes
SHA-256: 59861fb2b05faf1b2b3410eef56906b2df02cbe8a1f9be1e42d0426d9afea049