Malicious PDF — malware analysis report

Static analysis result for SHA-256 550fdc134a208035…

MALICIOUS

PDF

335.3 KB Created: 2022-02-08 06:16:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 7319163e1b91ab91ab0c497b0064512c SHA-1: 8f9468cdb3714ce9eef7c89dad6e44ab536dba78 SHA-256: 550fdc134a20803597111e4e85a272e116db33a2f60b710b68fe14585dc24de2
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5565

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://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/i8uiefn2s0s1oa3elth7hnn2b5/24982900322.pdf In PDF document text
    • http://www.immat.org.tr/kcfinder/upload/files/gejafuzaxivekebig.pdfIn PDF document text
    • http://a-pluset.com/userfiles/fanimabovoraxubemokotefo.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/50274973611.pdfIn PDF document text
    • https://www.unecol.com/uploads/kcfinder/upload/files/34799491399.pdfIn PDF document text
    • http://www.laterveer-biesenbeek.nl/ckfinder/userfiles/files/sewesunovimubewuvefesoz.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/2b69vc12hj1t9pqvgsvbvbbl00/todudekovemig.pdfIn PDF document text
    • http://houtackers.nl/userfiles/file/99358623440.pdfIn PDF document text
    • http://splogservice.ru/content/file/75760761901.pdfIn PDF document text
    • http://fulns.com/uploadfile/fckedit/file/1630804802EWhj.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160de6649ee9a9---fajezoruxagulenesoviz.pdfIn PDF document text
    • http://dogalakustik.com/depo/sayfaresim/file/mofopevutapubodovit.pdfIn PDF document text
    • http://www.jfac.kr/ckfinder/userfiles/files/37579790933.pdfIn PDF document text
    • http://ahrestygz.com/userfiles/files/20210910_023016.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1618d21a9466cf---tujepezo.pdfIn PDF document text
    • https://rux-thai.com/ckfinder/userfiles/files/58422255075.pdfIn PDF document text
    • http://olympiad-bigben.ru/ckfinder/userfiles/files/71258016813.pdfIn PDF document text
    • https://soyana.de/js/ckfinder/userfiles/files/96509512191.pdfIn PDF document text
    • http://asia-test.informacittadino.net/media/files/28536942060.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1610301b482284---mafobepogapimopuzavox.pdfIn PDF document text
    • http://demo-jesma.shopcloud.es/ckfinder/userfiles/files/pidilimemuj.pdfIn PDF document text
    • http://ckrestaurantgroup.com/ckfinder/userfiles/files/watevetujimekup.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/0h406p72jfera4bfu9u3qeub8i/64779241884.pdfIn PDF document text
    • http://www.dfdtrading.sk/ckfinder/userfiles/files/nonojebiparakelu.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/16125c2fa75713---lopavun.pdfIn PDF document text
    • http://coffeexclusive.co.uk/kcfinder/upload/files/debutamow.pdfIn PDF document text
    • http://sjzhtchem.com/upload/files/xizulujamolatanotal.pdfIn PDF document text
    • http://projecthouse.bg/uploads/CKfinder/files/fijexe.pdfIn PDF document text
    • http://radio-salsa.fr/php/rs/filesupload/file/38405439194.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/35522623653.pdfIn PDF document text
    • http://luyutea.net/v15/Upload/file/2021111515045529.pdfIn PDF document text
    • http://booklandbooks.com/userfiles/file/18714396336.pdfIn PDF document text
    • http://westernmaki.com/uploads/files/61497909924.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/66921bcce3dd5b9768c38468cb5f856f/retupipalamomoguvazed.pdfIn PDF document text
    • http://digitalpolicycouncil.com/imagenes/file/63213052962.pdfIn PDF document text
    • https://jensbrode.de/files/file/69316414929.pdfIn PDF document text
    • http://laulumaja.fi/ckfinder/userfiles/files/radusavunavidokopizo.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1611a929f69de6---91925822973.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/29qnv1qk36qe8iopedgtk48n66/89702058770.pdfIn PDF document text
    • http://www.bluewhaleline.com/image/upload/File/pexodezigofivum.pdfIn PDF document text
    • http://mutitar.com/user_img/files/88458395538.pdfIn PDF document text
    • https://shriayurvednagpur.org/public/ckfinder/userfiles/files/94428898223.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=assignment+calendar+template+freePDF 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_off0004ce7b.bin)
    +1 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004ce7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE7B 17184 bytes
SHA-256: a24ff8c6e37bb87077a72706c4e29c330bf0e496bb7b96b5d68c0f0b77b0f72b
font_01_sfnt_off0004fb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB32 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00051254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51254 10824 bytes
SHA-256: e6fba8890d676cee215b07b869cdbdd2c397b883660dc4ec833b6ca12a68416b