Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a991dc8b9720ea…

MALICIOUS

PDF

67.4 KB Created: 2021-02-21 19:22:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 89c833928c480e682be9e57fb534c643 SHA-1: e742457f7aa62bc1a2d951de079b988a49409fa8 SHA-256: 11a991dc8b9720eaaa049376cfbfbb79e5a11d78b737850246d045d2e3f0f84d
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://jacksth.ru/wb?keyword=interior%20design%20institute%20melbourne PDF link annotation
    • http://vengriya.space/31151780953ve49t.pdfIn PDF document text
    • https://cdn.sqhk.co/rusefijow/dviighp/coffin_dance_meme_roblox_music_id.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421641/normal_5fd0ed2bc2d29.pdfIn PDF document text
    • https://cdn.sqhk.co/ragekasa/dq9A2wT/coin_dozer_casino_prize_upgrade.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454299/normal_5feb9f076183c.pdfIn PDF document text
    • http://islandlandscapesbb.com/viwenijibigifojawidonomaft7nbh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421623/normal_5fd7c3c30d267.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/6Phc5ig/72014004706.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380223/normal_600f084509415.pdfIn PDF document text
    • http://waystep.site/enfermedad_de_alzheimer_tratamientoj05if.pdfIn PDF document text
    • https://cdn.sqhk.co/jowowibow/jehcCX7/h_and_m_baby_boy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385631/normal_600fe4925998e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393346/normal_5fd7cb0167f3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459794/normal_601b3ff644820.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/3ItlRSl/kexowigowo.pdfIn PDF document text
    • https://cdn.sqhk.co/xilobotinisi/jg4pjbF/influencer_follower_count_tracker.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482027/normal_5fc9f994f093c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403408/normal_5fe9927a1872a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB8 5012 bytes
SHA-256: cf2edd1c1579d21b5e5dd61c0df013fecf0bcae6df072f146ea6fb24f125c89f
font_01_sfnt_off0000dba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA9 10840 bytes
SHA-256: a809329a45c966f86988bffcc58366623bd0315ef1c891303c5bd6c16bc4af96