Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b812399dc63488…

MALICIOUS

PDF

232.0 KB Created: 2022-03-08 06:31:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 8a9a0d82f3da98cffcb9d30adaeb09c6 SHA-1: 9571f39f0c540ded657c8fffa1408f76eec53771 SHA-256: 88b812399dc63488dccb072a38dd1e4146eb8276ee667e75607c71279577d01c
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7988

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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lazav.co.za/XSRYdR1H?utm_term=bernina+artlink+8 PDF link annotation
    • https://www.amis-simserhof.fr/kcfinder/upload/files/84719544061.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/22157025218.pdfIn PDF document text
    • https://www.yukule.com/ToBeDeleted/admin-assets/js/ckeditor_4.6.2_standard/kcfinder/upload/files/56700667536.pdfIn PDF document text
    • http://xn--om2b17qba631m.com/files/Upload/file/lomederiseloraduwenoriwa.pdfIn PDF document text
    • https://jecoexports.com/ckfinder/userfiles/files/wavakexefaxaxuxanusawawo.pdfIn PDF document text
    • http://music-saikung.com/ckfinder/userfiles/files/49166554253.pdfIn PDF document text
    • http://phantasos.org/userfiles/file/92624808308.pdfIn PDF document text
    • https://cuatudongsaigon.net/uploads/files/59316285231.pdfIn PDF document text
    • http://ledlight-lamp.com/mingyi/images/userfiles/file/44825188680.pdfIn PDF document text
    • http://derivat.sk/files/61418218735.pdfIn PDF document text
    • https://yennenga.org/business_school/uploads/file/61023374231.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161fd141be23e2---39129200094.pdfIn PDF document text
    • https://www.soudeurs.com/libs/kcfinder/upload/files/lebenepejizabewesodolam.pdfIn PDF document text
    • http://fteq.ru/files/file/wusawi.pdfIn PDF document text
    • http://agedwedfjtj.pretty-match.com/upload/files/22308381935.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16218624fd626d---lagewasex.pdfIn PDF document text
    • https://lekkermooi.nl/userfiles/file/74172512275.pdfIn PDF document text
    • https://voskovefiguriny.cz/kcfinder/upload/files/gumor.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621978f9bccaf---zilafexudazuw.pdfIn PDF document text
    • https://walkandsmile.com/userfiles/file/15515199425.pdfIn PDF document text
    • https://qfuse.it/images/uploaded_files/ckfinder/files/1645675129_fcdae6b053.pdfIn PDF document text
    • http://355353.ru/userfiles/file/fanuzedogapivipiwaw.pdfIn PDF document text
    • http://nitecoreromania.ro/files/file/retulazurekepojo.pdfIn PDF document text
    • http://croepi.ch/app/webroot/kcfinder/upload/files/47313843160.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16206debd47a5d---42834692381.pdfIn PDF document text
    • http://journalstudiesanthropology.ro/adm/jsq/kcfinder/upload/files/63982290408.pdfIn PDF document text
    • http://sedistec.de/img/uploads/files/61550647913.pdfIn PDF document text
    • http://canoeing.by/pics/files/gurojijub.pdfIn PDF document text
    • http://elsped.hu/files/file/16007415404.pdfIn PDF document text
    • https://promenade-perpignan.com/userfiles/file/mopitafonupupatopi.pdfIn PDF document text
    • http://szentistvanpatika.hu/upload/file/vekitogesofufos.pdfIn PDF document text
    • http://mamnonsaokhue.vn/app/webroot/files/ckfinder/files/92128930537.pdfIn PDF document text
    • http://konemara.hu/userfiles/file/3222123453.pdfIn PDF document text
    • http://spbi.cz/res/file/46168794661.pdfIn PDF document text
    • http://synowka.pl/galeria/file/wapemavogaginisinokeronij.pdfIn PDF document text
    • http://xinyaoqiye.com/upload_fck/file/2022-2-26/20220226034741934986.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 extracted file (font_00_sfnt_off000336b6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000336b6.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000336b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336B6 16844 bytes
SHA-256: 9694d4d4c41eab0da02d19cec48f8daa4a7b5ab8a8c716b635515c6937459ec2
font_01_sfnt_off00036286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36286 10168 bytes
SHA-256: 0494404369fd39c769ef7ae8cf7843b5f793695e511f9758379d8788cd7f387c
font_02_sfnt_off00037960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37960 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9