Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de6490aa3ccad52…

MALICIOUS

PDF

500.3 KB Created: 2022-03-09 07:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-29
MD5: e1ad1d68598db5c01bdd848950590d40 SHA-1: b7c3aac52e3495979fe3a499b10eee7919c1643d SHA-256: 4de6490aa3ccad52ec955e44e5b564157d9ff4dc3f6768a08f07a2a795b6cfdc
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5336

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 https://lazav.co.za/XSRYdR1H?utm_term=cbse+result+2019+class+10+date+sheet PDF link annotation
    • http://olddieselparts.com/ckfinder/userfiles/files/nagiluwovukiruros.pdfIn PDF document text
    • http://streetnn.ru/data/upload/ck/files/71604497389.pdfIn PDF document text
    • http://sablinproperties.com.bd/public/admin/assets/ckeditor/kcfinder/upload/files/57701317503.pdfIn PDF document text
    • https://pilot-nav.com/ckfinder/userfiles/files/tizosakopibinefodiwogor.pdfIn PDF document text
    • https://quangcaowebsitecomvn.xemlaco.com/uploads/files/91363915596.pdfIn PDF document text
    • https://mjrspot.com/fckimages/file/xopelowinuzi.pdfIn PDF document text
    • http://www.oe.com.tw/ezadmin/ckfinder/userfiles/files/55366526710.pdfIn PDF document text
    • http://jeanchapleau.com/userfiles/file/gitem.pdfIn PDF document text
    • https://www.v-investor.ru/kcfinder/upload/files/logizipoxikepota.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621d2e626244a---xolatuduxokezutidevupo.pdfIn PDF document text
    • http://devison-matras.com/upload/file/wenigevogofuj.pdfIn PDF document text
    • http://eur-idea.com/userfiles/file/jipiluzakirabuzep.pdfIn PDF document text
    • https://seerupit.dk/assens/file/wewivafadixujekuj.pdfIn PDF document text
    • https://bkdesign.ee/userfiles/file/5847977777.pdfIn PDF document text
    • https://exxel.cz/kcfinder/upload/files/daruzokomogod.pdfIn PDF document text
    • http://hljxt.com/upload_files/file/220208120941161559bw2muz.pdfIn PDF document text
    • https://nvsrolko.org/ckfinder/userfiles/files/59361488933.pdfIn PDF document text
    • https://inc.pamlskovnik.cz/ckfinder/userfiles/files/91090404633.pdfIn PDF document text
    • https://unecol.com/uploads/kcfinder/upload/files/kugasuzufotajidevad.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/162204a627348d---molofekewapigawatixorig.pdfIn PDF document text
    • http://snbh.imadiff.net/kcfinder/upload/files/10620655183.pdfIn PDF document text
    • http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/kurub.pdfIn PDF document text
    • http://kbchina.de/upload/didufowebeb.pdfIn PDF document text
    • http://waypl.pl/upload/File/valumawipavirexejubarug.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1620182928ac02---87967204426.pdfIn PDF document text
    • http://hyundai-baoloc.com/luutru/files/gujeba.pdfIn PDF document text
    • http://www.regional4.org.ar/administrador/kcfinder/upload/files/pafodalojasubupeb.pdfIn PDF document text
    • http://yoyaku.com/app/webroot/js/kcfinder/upload/files/ritajetididomuzu.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/b098b8cf70268bba9c23284d3431f1d6/36656152432.pdfIn PDF document text
    • http://gelateriacool.it/userfiles/files/35008134679.pdfIn PDF document text
    • https://inprovitvenezuela.com/ckfinder/userfiles/files/38049040218.pdfIn PDF document text
    • https://csp-pub.com/stockages/files/sizudetasanixesonu.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_off00075aa5.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00075aa5.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00075aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75AA5 10884 bytes
SHA-256: 8acbaf424d10b02c7c8484e1c6b6941b9952b30652d79078257a8324b09361c4
font_01_sfnt_off0007741a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7741A 19988 bytes
SHA-256: 546e0287b518b9dda1157ec1e8f666684c7705b662ac34c58d040d1e27efeee2
font_02_sfnt_off0007a885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A885 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9