Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc75a6cdf717319…

MALICIOUS

PDF

66.4 KB Created: 2021-02-14 17:24:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 206fe7bb04d145d572b1caeb228684a6 SHA-1: d9890969c4663a6b285454fd8cbb7e786f9e8eef SHA-256: 9dc75a6cdf71731909b301ca1e5397c6734d4abd07dd197467446fcfc31deb22
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wix?keyword=sport+head+volleyball+minijuegos PDF link annotation
    • https://ridejotewofo.weebly.com/uploads/1/3/5/3/135314456/ruwutisowelevaw-rurumi.pdfIn PDF document text
    • https://cdn.sqhk.co/vigasigetogi/djbjRiu/accuradio_smooth_jazz.pdfIn PDF document text
    • https://rilulozopofebu.weebly.com/uploads/1/3/1/4/131406258/zuxawali.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/yAsYIgh/checklist_approach_country_risk.pdfIn PDF document text
    • https://cdn.sqhk.co/nobutowug/igJsjjh/rixejabetozokinep.pdfIn PDF document text
    • https://denimuka.weebly.com/uploads/1/3/4/5/134582609/2b3b36.pdfIn PDF document text
    • https://cdn.sqhk.co/giganopof/ZGhbAHp/knight_of_wands_star_sign.pdfIn PDF document text
    • http://idealica-tufficiale.website/tracteur_ford_4610_revue_techniqueq8s1q.pdfIn PDF document text
    • https://cdn.sqhk.co/lobaluxomo/ajhgegf/preschool_lesson_plan_themes_for_january.pdfIn PDF document text
    • https://cdn.sqhk.co/xanodujijefu/TgadDAQ/bloons_tower_defense_6_deflation_strategy.pdfIn PDF document text
    • https://cdn.sqhk.co/lonubugogere/geSsggK/english_grammar_exercises_book_free.pdfIn PDF document text
    • https://cdn.sqhk.co/metusoteliza/D3jcial/the_fear_creepy_scream_house_apk.pdfIn PDF document text
    • http://naturapple.space/73447915694hgan2.pdfIn PDF document text
    • https://cdn.sqhk.co/xaloxezajaga/hcOigif/equalizer_app_for_windows_10_free_download.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/lijulijowivaze/infectious_disease_reports_journal_impact_factor.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/tazukanefurudujore.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/far_cry_4_xbox_one_achievement_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/4635252684.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_off0000c665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC665 5852 bytes
SHA-256: 9791e014906400ebc6bbdeab006d72d4a8b6196394b99397bedd59fa17bb1f2c
font_01_sfnt_off0000da35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA35 10116 bytes
SHA-256: 21d204889b585bd803fece508f9a823c9bbdb43876b0bee3d5721445c30eac7a

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