Malicious PDF — malware analysis report

Static analysis result for SHA-256 7828db4fa5fed1ae…

MALICIOUS

PDF

314.6 KB Created: 2022-02-06 04:28:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: bdc3f994807561572ca2a67d67e0783e SHA-1: 5609bb8b8f2516a968efdd44592af1470ddb31d1 SHA-256: 7828db4fa5fed1aef53dc306c1d8838c36c129c8853eedcd6b5b3b26b592e9ea
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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://norin.co.za/XSRYdR1H?utm_term=xiaomi+eu+miui+10 PDF link annotation
    • https://atavio.ru/files/file/17823518266.pdfIn PDF document text
    • http://www.granito-terrazzo.be/ckeditor/kcfinder/upload/files/79527232636.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/1eabf3ee61567bcc1e8986760e373f79/muderamomononudurap.pdfIn PDF document text
    • https://webkapper.nl/ckfinder/userfiles/files/30799593127.pdfIn PDF document text
    • https://cardion.dk/gfx/fckimages/file/lidoxekaveza.pdfIn PDF document text
    • https://fleschimmo.lu/userfiles/files/66071406684.pdfIn PDF document text
    • http://belovosushi.ru/files/tesasagufisuruwajelus.pdfIn PDF document text
    • http://baikalspring.ru/ckfinder/userfiles/files/30310419499.pdfIn PDF document text
    • http://di-tech.kr/fckeditor/userfiles/file/gujapaxunitomevenumifokut.pdfIn PDF document text
    • https://fibra-optica.ro/ckfinder/userfiles/files/gekapejavigemapafosus.pdfIn PDF document text
    • http://parfumerieindex.nl/images/uploads/42788564128.pdfIn PDF document text
    • http://bosch-elektronarzedzia.pl/catalog/file/65458588345.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/pudimizupoxutiviwadeba.pdfIn PDF document text
    • http://osstemcardiotec.com/files/fckeditor/file/396096005610d7649bd9a1.pdfIn PDF document text
    • http://pandoraecza.com/genelresimler/file/lazilok.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/161493004cfd6b---pipuzatenu.pdfIn PDF document text
    • http://webmba.fr/client/logo/file/89163481864.pdfIn PDF document text
    • http://nigerseedindia.com/uploads/xugudasukosa.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/tefazidexezaxuvosat.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/0e70fe75322415e6b4e4eb1f6ef5b6e2/tarazubugetivukek.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_off000480c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x480C8 18080 bytes
SHA-256: 889d8c574b7969990a59055c471789140a774280afe49d0226670074c9c11b60
font_01_sfnt_off0004ae7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE7A 10032 bytes
SHA-256: a47c7614b118c60ce0994893d564f3f788e73dbce5b9201af2a5330ac44dd561
font_02_sfnt_off0004c4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4C9 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9

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