Malicious PDF — malware analysis report

Static analysis result for SHA-256 87532b9020ce45bb…

MALICIOUS

PDF

480.8 KB Created: 2022-03-27 18:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: 21cb1b3b293b13197cfff4402d95e8c6 SHA-1: b65a8076e7798eb7120797879c75ec5661dfa9f4 SHA-256: 87532b9020ce45bb45eff6f1ade329c7119a7c158774fa6ed407c0e0d62ba8b0
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5597

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.
  • 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.
  • 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 http://kapalishakti.com/ckfinder/userfiles/files/65875816981.pdf In PDF document text
    • http://inteko-tula.ru/f/file/lewanewisis.pdfIn PDF document text
    • http://muszosz.hu/_user/file/lesoligufigut.pdfIn PDF document text
    • http://ppic.pl/www/js/kcfinder/upload/files/morivumapajovavuz.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16208c5333fe98---lutinogunizatuzexewijini.pdfIn PDF document text
    • http://gesundezellen.com/neu/userfiles/file/kizeru.pdfIn PDF document text
    • http://schneider-glossa.ru/kcfinder/upload/files/63808966702.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1622c139086161---23664571128.pdfIn PDF document text
    • https://solidpractise.com/files/userfiles/file/fokeremoxesedugeluvefosur.pdfIn PDF document text
    • http://maschimaurizio.it/userfiles/files/61755153500.pdfIn PDF document text
    • https://maychieuvinh.vn/upload/files/pezolapijurajegimuxu.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1622b823d95702---65898134645.pdfIn PDF document text
    • http://pjj.aoosung.com/upload/editor/file/69883694936.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/4b4f4cbb6db10e73c83e59f3762710ad/mowomipobopuderofojobef.pdfIn PDF document text
    • http://sial.pl/galeria/file/65014602109.pdfIn PDF document text
    • http://yaan121.com/uploads/files/202202131201586300.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2022030420170325.pdfIn PDF document text
    • http://www.injamal.es/nueva/ckfinder/userfiles/files/kubazagaj.pdfIn PDF document text
    • http://arborspringsforestry.com/img/files/jadexiradefutowivudinedek.pdfIn PDF document text
    • http://www.alborada.es/ckfinder/userfiles/files/xitonimipavatesago.pdfIn PDF document text
    • http://bangladeshceramicsociety.com/uploads/editor/files/76760074287.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=de+pantalones+para+pantalones+robloxPDF link annotation
    • http://asktasi.com/ckeditor/kcfinder/upload/files/1689001174.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_off00071298.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00071298.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00071298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71298 19068 bytes
SHA-256: ef19d1a440eead433f1122effce28a909080945107afa643467cd14f2af2cf75
font_01_sfnt_off0007440b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7440B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00075b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B2B 10396 bytes
SHA-256: 8bf8cc46666d3a42b651ceb60e7b1328dc23bccccba6c5d0826c451119aaaa8a