Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa804013658fe091…

MALICIOUS

PDF

378.1 KB Created: 2022-01-16 05:15:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: ff11c3d27aa325d2ab74326c93930390 SHA-1: 1b19cd0facde85fb0f0ce6af4edd8a4ea887e944 SHA-256: aa804013658fe091a1e1ee2d4a2da49237d27a345b70fe75bf06ee9f8583d3af
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8021

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://catamma.ru/uplcv?utm_term=curriculum+for+agricultural+science+education+answers PDF link annotation
    • http://xn----9sbbnbtte4cyg.xn--p1ai/ckfinder/userfiles/files/52433929204.pdfIn PDF document text
    • http://i-mag-ine.com/media/files/11541073894.pdfIn PDF document text
    • https://smartcirclegroup.com/userfiles/file/39797454348.pdfIn PDF document text
    • http://www.cottagegrad.ru/files/file/pavikanataragez.pdfIn PDF document text
    • http://sm.ac.th/ckfinder/userfiles/files/jalovafilovodimexinowupit.pdfIn PDF document text
    • http://ultrarelaxedcbd.com/newerac2c/userfiles/file/75970735808.pdfIn PDF document text
    • http://dragonera.cn/admin/userfiles/file/sepenowisiraxuxotimox.pdfIn PDF document text
    • http://vishwkarmaenterprises.com/webroot/img/userfiles/files/99701902266.pdfIn PDF document text
    • https://es88.tw/pro_pic/files/32976805056.pdfIn PDF document text
    • http://daiichigroup.net/uploads/news_file/74959844748.pdfIn PDF document text
    • http://cyclad.org/UserFiles/file/guverubakupi.pdfIn PDF document text
    • http://alkord.kz/app/webroot/js/kcfinder/upload/files/xuxaropapon.pdfIn PDF document text
    • http://franceplus.fr/userfiles/file/sadosiworizorusupujalez.pdfIn PDF document text
    • http://seanmore.com/userData/board/file/99598186201.pdfIn PDF document text
    • https://arrad.ch/modules/ck/ckfinder/userfiles/files/77528687072.pdfIn PDF document text
    • http://nepaldristi.com/dbros/public/ckeditor/kcfinder/upload/files/44354860136.pdfIn PDF document text
    • http://inciboya.com/resimler/site/files/1074572525.pdfIn PDF document text
    • http://emilybarnes.com/DEVELOPMENT/VERSIONED/emilybarnes/trunk/sites/default/files/file/78670118042.pdfIn PDF document text
    • http://zhongguohuachun.com/d/files/60268551403.pdfIn PDF document text
    • http://vitrine-prof.com/files/615407228.pdfIn PDF document text
    • http://linklandhotels.com/upfile/editor/files/21623986125.pdfIn PDF document text
    • http://s250801404.onlinehome.fr/img/uploaded/file/bekaxodep.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00057a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A8E 11036 bytes
SHA-256: 1ea7fb42adee853473d7858702d0834de7d5ad781eb3e24bd4f3deaefce81bef
font_01_sfnt_off00059421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59421 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0005aac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAC0 17820 bytes
SHA-256: e528092c485eccb317768891e87abab2a094dada1a4ca5532565eb72b02113b4

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