Malicious PDF — malware analysis report

Static analysis result for SHA-256 4251ba50678b2f15…

MALICIOUS

PDF

438.2 KB Created: 2022-01-09 02:03:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: b097ae6b8e3476dfd20d3a16d2c9746a SHA-1: 39391dad89bc12bf808fb2d2ad1c39f5b1124415 SHA-256: 4251ba50678b2f153b63dc57a1c61c584faecffa0f1c38598e07e0a341e5b298
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5854

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://jjw-led.com/userfiles/file/monimejajaxefo.pdf In PDF document text
    • http://testwebb.net/kcfinder/upload/files/wifixen.pdfIn PDF document text
    • http://stonebreaker.at/fiveregumegujelab.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/soluzajumeme.pdfIn PDF document text
    • https://iwistw.com/upload/files/75818939651.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/zubufiwepuzotalolukegino.pdfIn PDF document text
    • http://etepi.pt/js/ckfinder/userfiles/files/xanavopitekikepaweweg.pdfIn PDF document text
    • http://salonorganica.ru/upload/files/nonugagafago.pdfIn PDF document text
    • http://cambodia-footwear.org/kcfinder/upload/files/kebetoxisimotaweg.pdfIn PDF document text
    • https://tiad-mtm.com/assets/admin/js/plugins/kcfinder/upload/files/woruvaviruzofezi.pdfIn PDF document text
    • http://radio6deenero.com/uploaded/files/kojim.pdfIn PDF document text
    • http://polishingmarblefloor.it/userfiles/files/82137371964.pdfIn PDF document text
    • https://webaruhaz.codefon.hu/js/ckfinder/userfiles/files/tonomekibime.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16163f6d6a0fdd---19236794792.pdfIn PDF document text
    • https://www.chasselas-de-moissac.com/assets/kcfinder/upload/files/3068558757.pdfIn PDF document text
    • http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/161a26dcb58a1f---risik.pdfIn PDF document text
    • http://deforma.it/userfiles/files/55207670406.pdfIn PDF document text
    • https://laznia-radom.pl/userfiles/file/77304969570.pdfIn PDF document text
    • https://www.yulava.es/js/libraries/ckeditor/kcfinder/upload/files/busaxugumuvosoriwetute.pdfIn PDF document text
    • http://jungam21.com/upfiles/file/1641663991.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146fafec068c---ruzenixek.pdfIn PDF document text
    • https://schneider-rozetki.ru/kcfinder/upload/files/kefovunugobobason.pdfIn PDF document text
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/9282995341.pdfIn PDF document text
    • https://ikorti-iao.com/userfiles/files/30844533365.pdfIn PDF document text
    • http://rtm-plus.ru/ckfinder/userfiles/files/tajopetiwal.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/RhDyTiV0TgQ/uplcv?utm_term=symbolic+interactionism+sociology+pdfPDF link annotation
    • 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_off00066512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66512 19892 bytes
SHA-256: c7d597071fa15f41e1f087a8802aadd3c2532e9ce5da80b358aa391183ac09c1
font_01_sfnt_off000698a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698A6 11292 bytes
SHA-256: 73d71f48baeab7320961b1676fa9821ff5210189b84ad9bfc5a63dc2894d310c
font_02_sfnt_off0006b2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2BB 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336