Malicious PDF — malware analysis report

Static analysis result for SHA-256 8751fa43d7a067fd…

MALICIOUS

PDF

607.1 KB Created: 2022-01-21 13:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-05
MD5: 3f65699fb9b3d91920f2bc4703d84477 SHA-1: 1438267ecae9b19bf2aa3af5fdca0485733efe3d SHA-256: 8751fa43d7a067fd6d9976370e0ee16fbebc00273509edcbb642357d03ff271a
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2855

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://www.cistarekaupa.cz/kcfinder/upload/files/15577272005.pdf In PDF document text
    • http://doanekeyes.com/userfiles/docs/82290408860.pdfIn PDF document text
    • http://phayaotechno.com/UserFiles/File/80748522220.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/172fe35b29bfad9e01fb2d4c238c2658/keximoto.pdfIn PDF document text
    • http://nm-union.ru/ckfinder/userfiles/files/jebenumafoxonizugufilerif.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/76991d089ad8d7ea5d4bf715fa4f337e/81041787816.pdfIn PDF document text
    • https://eownauto.com/uploadpic/files/32512487602.pdfIn PDF document text
    • https://rajaunited.com/contents/files/gakukirelefifigogig.pdfIn PDF document text
    • http://www.regional4.org.ar/administrador/kcfinder/upload/files/7975653709.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/fb545604fc14ddea4d74c067acf574b2/84225755824.pdfIn PDF document text
    • https://lensmam.com/userfiles/file/dewesebozidowotaderiwe.pdfIn PDF document text
    • https://bergeraustralien51.com/caningest/images/file/97988587535.pdfIn PDF document text
    • https://silverstonedevelopments.com/ckfinder/userfiles/files/93781763261.pdfIn PDF document text
    • https://pcparts.fr/ckfinder/userfiles/files/96835873228.pdfIn PDF document text
    • https://mwasafat.com/uploads/files/pevorexa.pdfIn PDF document text
    • https://www.silverskilled.com/gateway/kcfinder/upload/files/71334469358.pdfIn PDF document text
    • http://www.drivingschool-brno.cz/files/files/84579328014.pdfIn PDF document text
    • http://rajhansnursery.com/userfiles/file/43226089622.pdfIn PDF document text
    • http://ecofincas.net/ckfinder/userfiles/files/potarowudubawudetowekus.pdfIn PDF document text
    • http://chiari-web.com/ckfinder/optimist/files/bipajojijupodevonez.pdfIn PDF document text
    • http://elmakoleji.k12.tr/public/kcfinder/upload/files/62259334475.pdfIn PDF document text
    • http://plechotice.sk/tmp/file/1895073699.pdfIn PDF document text
    • http://candleelectricals.com/uploaded_files/userfiles/files/17522230369.pdfIn PDF document text
    • https://casasholidays.com/scgtest/team-explore/uploads/files/37257397565.pdfIn PDF document text
    • http://cnex.cc/images/blog/file/litusujudafova.pdfIn PDF document text
    • http://a-pro-peau.fr/userfiles/file/59863543214.pdfIn PDF document text
    • http://artattack-concerts.de/files/file/35464178957.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/161b0b8c3685c3---zidovatimujufu.pdfIn PDF document text
    • https://e2imgu.ratnatelenet.com/UserFiles/file/fixogekavobeged.pdfIn PDF document text
    • https://10playsolutions.com/clients/softklk/documents/_articles_/file/ronawezoledugaf.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/vivoxik.pdfIn PDF document text
    • https://infrapanel-alegjobbfutes.hu/userfiles/file/pekaxubanowizipi.pdfIn PDF document text
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/b856a3f49cd813cd89e5c30ff4ef6f15/suwijonedunujabubotika.pdfIn PDF document text
    • http://vegman-kzn.com/ckfinder/userfiles/files/40234474589.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/161655af50861a---zujijobesixunikubuximilo.pdfIn PDF document text
    • https://www.italianamaterassi.it/admin/kcfinder/upload/files/javazifux.pdfIn PDF document text
    • https://sanagustin.cl/files/sapelokemo.pdfIn PDF document text
    • https://arendic.cl/files/sidefaditovelezuganiwa.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/cmwvf4RlXg4/uplcv?utm_term=list+of+anti+inflammatory+drugs+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 extracted file (font_00_sfnt_off000910da.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000910da.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000910da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x910DA 16748 bytes
SHA-256: 07ba8882a78a58f410318a57f1ae9307104ac2b2c83b298cdb4497d4b5a070f7
font_01_sfnt_off00093c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93C72 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00095318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95318 10880 bytes
SHA-256: 2439f56f7f7309e3eac2c7c0980a7b986892a100faac5db15c16263954bb0f18