Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8b86207fb0c55e…

MALICIOUS

PDF

281.5 KB Created: 2022-03-18 16:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: 7a757fd4c570364c8c2c6e9949a5d4e7 SHA-1: acb874a7873f358b08ea0bcc537388bae6484c15 SHA-256: cb8b86207fb0c55e948a5ab9c4b6fd0ecf3c7c572c9b1fe03f74258162634757
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6855

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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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://podar.co.za/XSRYdR1H?utm_term=arteriovenous+malformation+radiology+uterus PDF link annotation
    • http://ylplj.com/ckfinder/userfiles/files/78978663653.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/7ec5b82b7047c57c1f44d233c83299c3/64307266366.pdfIn PDF document text
    • http://rosritual.su/app/webroot/js/ckfinder/userfiles/files/71621973578.pdfIn PDF document text
    • https://drjou-vc.com/upload/files/22914649869.pdfIn PDF document text
    • http://sindcomerciarioscs.org.br/adm/kcfinder/upload/files/sowav.pdfIn PDF document text
    • http://mensagemcrista.com.br/ckfinder/userfiles/files/9440793631.pdfIn PDF document text
    • http://hai-bi.com/uploads/files/202203071028553569.pdfIn PDF document text
    • http://amoy-art.com/Upload/file/xizugilurawojogoju.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1620ab28661626---77397836167.pdfIn PDF document text
    • https://saatyapi.com/upload/ckfinder/files/26856647859.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/5e8870cdd4ff1253392963fd8904cde5/firawutarogipodet.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/samqcpadu07o56bnc84nttcpda/tizuwodalujerakizex.pdfIn PDF document text
    • http://harmony-lazienka.pl/Upload/file/58846234002.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/dd04cc0f86ea715ccab885568153d2bd/raliziralegu.pdfIn PDF document text
    • http://donghotam.com/luutru/files/81080929750.pdfIn PDF document text
    • http://exekuce-majetku.cz/kcfinder/upload/files/gemeb.pdfIn PDF document text
    • http://rbtyutj01.com/userfiles/files/11991663881.pdfIn PDF document text
    • https://gira-rozetki.su/kcfinder/upload/files/niborut.pdfIn PDF document text
    • http://de.ruben.pl/ckfinder/userfiles/files/kumumin.pdfIn PDF document text
    • https://medicraftindia.com/uploads/file/webamorum.pdfIn PDF document text
    • http://mobilni-kadernictvi.cz/files/file/55083821172.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/pofimik.pdfIn PDF document text
    • https://boleto.serveragbr.com/datamont/userfiles/file/wosagi.pdfIn PDF document text
    • http://kalecikliyiz.biz/panel/kcfinder/upload/files/dulixofelisiserexez.pdfIn PDF document text
    • https://libertavoyages.com/kcfinder/upload/files/jabafuzetuxakotipisis.pdfIn PDF document text
    • https://i-chat.tw/js/ckfinder/userfiles/files/22974145800.pdfIn PDF document text
    • http://norilsk.torbay.ru/images/uploads/file/51442154909.pdfIn PDF document text
    • http://dietetyka-24.pl/images/files/zanejobaf.pdfIn PDF document text
    • https://reaga.net/js/ckfinder/userfiles/files/99862177241.pdfIn PDF document text
    • http://otticagries.it/custom/archivio/files/kopodujamajiriniwimuju.pdfIn PDF document text
    • http://sablinproperties.com.bd/public/admin/assets/ckeditor/kcfinder/upload/files/tatideginezupudujabe.pdfIn PDF document text
    • http://www.sindcomerciarioscs.org.br/adm/kcfinder/upload/files/jajekonojaxa.pdfIn PDF document text
    • https://www.bookings.gulfstarsports.com/admin/kcfinder/upload/files/66251178220.pdfIn PDF document text
    • https://senfina.top/uploads/files/91407171048.pdfIn PDF document text
    • http://xn--b1adbbbaeqjtsflbfms0e.xn--p1ai/pict/file/lebasineziwe.pdfIn PDF document text
    • http://angarakshaksecurity.com/userfiles/file/33405499620.pdfIn PDF document text
    • http://www.lalorraineperdue.com/documents/kujipaxunamimoxosusiga.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/badot.pdfIn PDF document text
    • http://dtmaso.com/public_html/Imagens/file/lowofuzorom.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_off0003f212.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003f212.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003f212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F212 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0004092d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4092D 19552 bytes
SHA-256: 681148aa576b409b5e042078e1642c066a47e7b73fb247470c7b67910dc50c00
font_02_sfnt_off00043ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43CE4 10956 bytes
SHA-256: 6b0216facbbea6ef204c6bbf5f26729ef0e2b45380827b4f5cc6d82a9cfdd9ff