Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb85ca20fb6f9c5c…

MALICIOUS

PDF

289.8 KB Created: 2022-03-24 05:58:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-09
MD5: d725a50a19117ddbd2b3f2b88a5d31cf SHA-1: e2636c1a7965d57261f6586caa1463435bec4144 SHA-256: cb85ca20fb6f9c5c9ab99f624120a28132e9c32c042b43c30dc69c97fe6e0ed3
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6854

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://sunuf.co.za/XSRYdR1H?utm_term=pan+de+cazador PDF link annotation
    • http://avvocato-callegaro.it/public/file/54526250196.pdfIn PDF document text
    • http://cwsf2013.sfiab.com/data/userfiles/file/71859784799.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fd51362034c---gowovuxadipozokiberi.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/05af813cee271722accf3def56ba744f/47907748746.pdfIn PDF document text
    • http://keemunblacktea.cn/uploads/file/020131396205.pdfIn PDF document text
    • https://theurbanthinktank.com/files/xejimifepujenapi.pdfIn PDF document text
    • http://com123.vn/uploads/file/52680397976.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/92296101368.pdfIn PDF document text
    • https://domainedulacstellan.com/admin/kcfinder/upload/files/12863178498.pdfIn PDF document text
    • http://harekatmemuru.com/images/Media/files/subudepedowiled.pdfIn PDF document text
    • http://onlinevay.com/upload/files/vezepogomuwupapo.pdfIn PDF document text
    • https://littleedupark.com/ckfinder/userfiles/files/radofalolejiteviku.pdfIn PDF document text
    • http://longarmquiltacademy.com/fckeditor/userfiles/file/jigixunuzaxamugudozo.pdfIn PDF document text
    • http://101-games.ru/images/uploads/files/40480661674.pdfIn PDF document text
    • http://anninhsieuthi.online/upload/files/58945072346.pdfIn PDF document text
    • https://bak.vn/upload/files/lufoxogagajimumute.pdfIn PDF document text
    • http://apex-architect.ru/images/file/nevijomowomexake.pdfIn PDF document text
    • https://pelletier-tp.fr/ckfinder/userfiles/files/25433418433.pdfIn PDF document text
    • http://zeci.nl/im/image/7906639402.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620d771f468ce---4490540449.pdfIn PDF document text
    • http://wp-supply.com/upimg/files/80359584972.pdfIn PDF document text
    • http://quiltingacademy.net/fckeditor/userfiles/file/sagimikovaji.pdfIn PDF document text
    • http://lasanisports.com/files/fovurulol.pdfIn PDF document text
    • http://coverybox.box8websites.com/ckfinder/userfiles/files/63985126221.pdfIn PDF document text
    • https://mbamantra.com/ci/userfiles/files/rakaluzanejiju.pdfIn PDF document text
    • https://pasifikendustriyel.com/userfiles/file/fokewijawexef.pdfIn PDF document text
    • http://t-eamplus.de/web/editor/files/39857576493.pdfIn PDF document text
    • https://webmanagement.produse-electrice.ro/images/file/8835020255.pdfIn PDF document text
    • http://www.oneworldkarate.com/fckeditorimages/userfiles/file/gojugilanusazeturesedax.pdfIn PDF document text
    • http://namngonviet.com/user-/files/kijanarunopog.pdfIn PDF document text
    • https://www.frontiermea.com/sites/all/libraries/ckfinder/userfiles/files/wutunerog.pdfIn PDF document text
    • https://registracijakoncar.com/webroot/js/ckfinder/userfiles/files/tenozubidujoxu.pdfIn PDF document text
    • https://www.trafiktehaklarim.org/kcfinder/upload/files/wavevibisemebewuwigezetad.pdfIn PDF document text
    • http://ranjoysarkar.in/FCKeditor/file/72512112192.pdfIn PDF document text
    • http://ediljolli.com/userfiles/files/64875200479.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_off0004160c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004160c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004160c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4160C 20112 bytes
SHA-256: 620ac7449ea79f9c47841862bcbc7cce937f1baf4dafcfea8aeaaa1caaf4b151
font_01_sfnt_off00044a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44A4E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004616e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4616E 10020 bytes
SHA-256: 5cf3691b950fd46a0695df291473fa7b62414c18832c572883f3d7bf19b1d92a