Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd20ff17929cbf5…

MALICIOUS

PDF

66.5 KB Created: 2021-02-22 14:37:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a32ccb39ec2fb41ed2fce1dd137140e8 SHA-1: 79366646dc9242ecd9cb9b929b0ec7ead179df6b SHA-256: 3cd20ff17929cbf5cf78cd5c764361fa4ce72ed5576f0755a8799f96c342d968
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://druttle.ru/wix?keyword=speechcraft+joshua+gunn+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4413239/normal_5ff0792497104.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415519/normal_5fee62f7c3f74.pdfIn PDF document text
    • http://ryukzak.digital/present_perfect_and_past_simple_exercises_perfect_english_grammar630dy.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/yjajdhi/54097029017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368265/normal_5fe3487a96f22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460982/normal_6024b528c54ef.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/s22I2gc/free_robux_no_verification_2020_ipad.pdfIn PDF document text
    • http://1fps.ru/779424751045swqa.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/ihaIiha/95286479789.pdfIn PDF document text
    • https://cdn.sqhk.co/rugofufol/jdijnRo/best_open_world_driving_games_pc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464995/normal_5ff458a33e5bd.pdfIn PDF document text
    • http://ditilage.22web.org/80447710184.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/wotodedaruzuk/jimmy_choo_song_video_mr_jatt.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/rinomukubunelumun.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/capitaes_de_areia_baixar_em.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/vezalini.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/vemepeval.pdfIn PDF document text
    • http://febiked.rf.gd/dna_structure_worksheet_high_school.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_off0000c744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC744 5688 bytes
SHA-256: 756826f5b880be7eb8be90633b33d0bc8e8263153dbfe28c096f24de1f6dcfe0
font_01_sfnt_off0000dab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB7 10016 bytes
SHA-256: c8c8198eaa91c03805ce5b2c3ae2324b9c0cfbfbab5f78c454f98e5407f56975