Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa834c3974e16943…

MALICIOUS

PDF

266.5 KB Created: 2022-03-31 21:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 35e0ff481b276dd40937c311f8733fa5 SHA-1: aeb357b4d372f9c970b75493279d03cba8a46b18 SHA-256: aa834c3974e169436a463156a65e8e037959edf2c616edf4d5c1ad0a9d35b938
152 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://colod.co.za/XSRYdR1H?utm_term=download+font+univers+67+bold+conden PDF link annotation
    • https://midlanddevelopers.com/backend/web/kcfinder/upload/files/taropoxubinupa.pdfIn PDF document text
    • http://vitanova-cattery.com/upload/file/vazegofufaxuzugog.pdfIn PDF document text
    • http://industra.sk/userfiles/file/53670539926.pdfIn PDF document text
    • http://nuklearmedizin-amro.de/userfiles/file/kidomowififugoraterupawu.pdfIn PDF document text
    • http://timandlor.com/userfiles/file/52135873212.pdfIn PDF document text
    • https://partnyor.az/userfiles/file/ziferanaxawitovotuliperu.pdfIn PDF document text
    • http://studiovalentini.eu/userfiles/files/46982364540.pdfIn PDF document text
    • http://brcassociati.com/userfiles/files/jubefazigomorerinaz.pdfIn PDF document text
    • http://chunzucn.yun2u.cn/upload/files/jexeneta.pdfIn PDF document text
    • https://299-45.com/CKEdit/upload/files/82159580989.pdfIn PDF document text
    • http://portakalweb.net/home/portakal/public_html/ckfinder/userfiles/files/sivamivajamipig.pdfIn PDF document text
    • http://brillodesol.com.ar/app/webroot/js/kcfinder/upload/files/15679901041.pdfIn PDF document text
    • http://zhuoxinlaw.com/userfiles/file/20220303170608_511794253.pdfIn PDF document text
    • http://se-ty.ru/uploads/userfiles/file/jutazawusu.pdfIn PDF document text
    • http://pedraferro.com/files/files/67625067366.pdfIn PDF document text
    • https://wubawujol.weebly.com/uploads/1/3/4/2/134266052/9500851.pdfIn PDF document text
    • http://logicamail.it/draft/media/biduzusufogakegudut.pdfIn PDF document text
    • https://dpmptsp.pemkomedan.go.id/dpmptspwebaplikasi/libraries/ckeditor/kcfinder/upload/files/jupirofup.pdfIn PDF document text
    • http://artpolyclinic.com/file/files/70861687774.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/zesufusimato.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622260b009283---28758324656.pdfIn PDF document text
    • https://slavyansk.biz/userfiles/file/gujijejixexejo.pdfIn PDF document text
    • http://www.fbs-g.com/kcfinder/upload/files/12061047742.pdfIn PDF document text
    • https://kogewovedof.weebly.com/uploads/1/3/4/3/134339257/xaxupezujegud.pdfIn PDF document text
    • https://tubababekegoso.weebly.com/uploads/1/3/4/8/134880125/kakazufasirixus.pdfIn PDF document text
    • http://helenhotel.vn/upload/files/dugewez.pdfIn PDF document text
    • https://mutakisutuw.weebly.com/uploads/1/3/4/7/134768563/mudazasabo_vavonuruxi.pdfIn PDF document text
    • https://geripipo.weebly.com/uploads/1/3/4/3/134371036/zebabipoze.pdfIn PDF document text
    • http://ing-triplee.com/ckeditor/kcfinder/upload/files/96489604006.pdfIn PDF document text
    • http://lnianemarzenie.pl/userfiles/file/23553960157.pdfIn PDF document text
    • https://kenivefu.weebly.com/uploads/1/3/4/7/134715486/4131952.pdfIn PDF document text
    • https://corpeverest.com/ckfinder/userfiles/files/85363235585.pdfIn PDF document text
    • https://tifubevova.weebly.com/uploads/1/3/4/4/134458665/kisapofewo.pdfIn PDF document text
    • https://shreenatharcade.evozonetechnolabs.com/userfiles/file/9654714461.pdfIn PDF document text
    • https://kuxevirajopar.weebly.com/uploads/1/3/5/9/135990570/3844681.pdfIn PDF document text
    • https://trvstore.com/userfiles/file/8302629972.pdfIn PDF document text
    • http://salda.se/saldus/kcfinder/upload/files/nanukijabuz.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/8euhrav1enbijipv4qicf8c6o3/dibumoradofopigok.pdfIn PDF document text
    • http://atlasbasincli.com/panel/kcfinder/upload/files/24532857710.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16236e9ca18471---43777797928.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621a598739de2---30497296704.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_off0003b54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B54C 19652 bytes
SHA-256: 389645dae75c88dc49bdd14714da56f39889c7567d64b5413f9877923c236b5f
font_01_sfnt_off0003e7f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E7F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0004000e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4000E 11080 bytes
SHA-256: b33620407a9d9e19b34a6f9ad3a1092948349237800a8afdc4bb32ee2d137fc9

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