Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa88ddbbe8f3fee9…

MALICIOUS

PDF

316.9 KB Created: 2022-03-26 06:11:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: ffcfb9f511fb8e008b22f920e9d2693d SHA-1: 87169f90b79ffd1ec97d5268b9684ed9b3004b5e SHA-256: aa88ddbbe8f3fee9991dd041c47a5c69659de083c1c84ddb7b91ef6190583c67
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7681

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://yubit.co.za/XSRYdR1H?utm_term=learning+salesforce+visual+workflow+pdf PDF link annotation
    • https://ph2020.org/FCKeditor/file/falotojusulobuxetazi.pdfIn PDF document text
    • http://style4.allwebeasy.com/userfiles/files/26680676672.pdfIn PDF document text
    • http://solis.altrodesign.eu/ckfinder/userfiles/files/belajin.pdfIn PDF document text
    • https://dalton-english.com/userfiles/file/89413958966.pdfIn PDF document text
    • http://anantitsolution.com/ckeditor/kcfinder/upload/files/54739667686.pdfIn PDF document text
    • http://www.wcd.com.tw/ezadmin/ckfinder/userfiles/files/nijunuzimi.pdfIn PDF document text
    • https://ntct-algerie.com/ckfinder/userfiles/files/12413459974.pdfIn PDF document text
    • http://alkord.kz/app/webroot/js/kcfinder/upload/files/veteselovuz.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/c419c70a4fe0f4ee65fb8b85210457a6/deburulowupu.pdfIn PDF document text
    • https://hitourkorea.com/FileData/ckfinder/files/20220303_3908D47A81118CBA.pdfIn PDF document text
    • https://cihangirhotel.com/upload/ckfinder/files/goluputawulesakanibow.pdfIn PDF document text
    • http://poliinc.com/upload/files/50854240914.pdfIn PDF document text
    • http://hoclaixebinhthuan.com/upload/contentFile/file/85244828171.pdfIn PDF document text
    • https://jv-cms.crazy-jessie.nl/uploads/files/pakoboleki.pdfIn PDF document text
    • https://averakazan.ru/kcfinder/upload/files/zizegak.pdfIn PDF document text
    • http://grafittipng.com/userfiles/files/10477678239.pdfIn PDF document text
    • http://studiovalecchi.it/userfiles/files/20303734715.pdfIn PDF document text
    • http://xn--80adic7alej3d.xn--p1ai/userfiles/file/pijavimotogivivopepokugap.pdfIn PDF document text
    • http://chin.getrade.net/uploadfiles/file/15210924978.pdfIn PDF document text
    • https://cgb-echafaudage.fr/upload/files/19209404194.pdfIn PDF document text
    • http://integrotech.pl/zdjecia/file/sebepug.pdfIn PDF document text
    • http://pnc21.com/files/fckeditor/file/15996538386230e903ea60f.pdfIn PDF document text
    • http://stimatacasa.eu/userfiles/files/xufof.pdfIn PDF document text
    • https://pmms-online.com/assets/file/fipugelebo.pdfIn PDF document text
    • http://donateagift.eu/userfiles/file/10707171804.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8aba6b6371f74556d7850031947c9dab/doxiwaxodinegomadom.pdfIn PDF document text
    • https://firsatoyun.com/calisma2/files/uploads/30461579699.pdfIn PDF document text
    • http://s250801404.onlinehome.fr/img/uploaded/file/xugukova.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_off000481f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x481F7 19020 bytes
SHA-256: 38918519080fa0ea9ca13372d6f61db1a8e6b710920de9a9c4b826465049d781
font_01_sfnt_off0004b3f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B3F8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004cb18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB18 11000 bytes
SHA-256: 6fb94b26785cd536ab18d0d27b2686dc2dba81b355b026e5ab43398596234d4d