Malicious PDF — malware analysis report

Static analysis result for SHA-256 550cf3aaf53eeba1…

MALICIOUS

PDF

265.2 KB Created: 2022-03-05 11:08:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: e7a60e4cf0bacffafa096990c15d6dfd SHA-1: fb67135f30bbf97ffe4460efe0e3a6bd31e7c8ba SHA-256: 550cf3aaf53eeba1273e8d7a4724a44252523882527e1d0b81fac43a42528ccf
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7444

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
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • 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 http://livermore.com/wysiwygfiles/file/popakuk.pdf In PDF document text
    • https://uncme.org.br/Gerenciador/kcfinder/upload/files/78644853577.pdfIn PDF document text
    • https://senfina.top/uploads/files/xafuwa.pdfIn PDF document text
    • http://egresiangus.com/admin/kcfinder/upload/files/86181697927.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/161fb07afd67a9---35573183567.pdfIn PDF document text
    • http://look.bio/kcfinder/upload/files/31594190453.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621271d91eb56---94162275790.pdfIn PDF document text
    • http://xn--80aesyq.xn--p1acf/files/file/75611572115.pdfIn PDF document text
    • http://architettorobertafasola.eu/userfiles/files/9901843145.pdfIn PDF document text
    • http://obraz-tlt.ru/userfiles/file/45851325164.pdfIn PDF document text
    • https://thefencedocumentary.ca/adminfiles/file/wakefudesijawetub.pdfIn PDF document text
    • http://support-cmu.com/filedata/file/76751280638.pdfIn PDF document text
    • http://pentas.eu/userfiles/file/68347623137.pdfIn PDF document text
    • http://www.fdconsult.qa/public/uploads/cms_files/taborefetetidezibobimilo.pdfIn PDF document text
    • https://rajatotogroup3.com/contents/files/77100289122.pdfIn PDF document text
    • https://zlato-eu.cz/upload/files/linojurovi.pdfIn PDF document text
    • http://barefoot.pl/userfiles/file/85524614111.pdfIn PDF document text
    • http://inkjetartandimage.com/Uploads/file/tudavonakowakokaxebesesi.pdfIn PDF document text
    • https://schneider-rozetki.ru/kcfinder/upload/files/16002355642.pdfIn PDF document text
    • https://mofrantech.com/userfiles/file/61812426951.pdfIn PDF document text
    • https://adilakaryakitnakliyat.com/kcfinder/upload/files/susisubikagor.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1620bf4ff2b2fd---42707946396.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16216cfd5cf7d8---kusozatigigukugudugaku.pdfIn PDF document text
    • http://smartbazar.online/app/webroot/upload/files/87093338840.pdfIn PDF document text
    • https://www.steyr-mannlicher.hu/admin/kcfinder/upload/files/rukifezilun.pdfIn PDF document text
    • http://ggbris.com/slbdavbatala/userfiles/file/nupumupasag.pdfIn PDF document text
    • http://amis-simserhof.fr/kcfinder/upload/files/lajedudaxekenaxefukotupep.pdfIn PDF document text
    • https://www.coremg.org.br/dinamico/includes/kcfinder/upload/files/71914582542.pdfIn PDF document text
    • http://bausite.ru/userfiles/files/mazuxuwimoxukopekutofugu.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=heat+of+formation+definition+examplePDF link annotation
    • http://www.kigimex.com.vn/ckfinder/userfiles/files/50074462759.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_off0003b37f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003b37f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003b37f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B37F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0003ca9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CA9A 19576 bytes
SHA-256: 43050efb0d4e0879e17f476e674c64a917d820cb7ab64aaae1783b830c158183
font_02_sfnt_off0003fd8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3FD8A 10584 bytes
SHA-256: 323ab4de7dd511f147ff78a7efd3e194fe0094e55fb3328bbb572e087a9b8e6c