Malicious PDF — malware analysis report

Static analysis result for SHA-256 5520b22b513acee8…

MALICIOUS

PDF

475.5 KB Created: 2022-01-24 15:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: 64993aae249136570107cd46d54cb436 SHA-1: 666db6e57d6a258db32a7de4534195661c780e6d SHA-256: 5520b22b513acee8541255c127931a27611da7609cb4a4cb743bf9a33f550bc3
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4333

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 http://spiregene.com/image/files/20210910_083130.pdf In PDF document text
    • https://piataafacerilor.ro/app/webroot/files/userfiles/files/weporomizizafof.pdfIn PDF document text
    • http://www.tributosantafesinos.com.ar/admin/kcfinder/upload/files/16466938104.pdfIn PDF document text
    • http://tattooindex.nl/images/uploads/32452125230.pdfIn PDF document text
    • https://igruppe.no/ckfinder/userfiles/files/badig.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161daa9663494f---52056353792.pdfIn PDF document text
    • https://kupro.bg/upload/wyswyg/files/37754206053.pdfIn PDF document text
    • http://ruresept.ru/files/file/sukajadesawa.pdfIn PDF document text
    • https://yp05.com/_UploadFile/Images/file/96972589579.pdfIn PDF document text
    • http://kozelsk-adm.ru/files/uploads/files/zanurumi.pdfIn PDF document text
    • https://wrd13.com/force/file/18465016861.pdfIn PDF document text
    • https://uzunlarpeynir.com/dursun/upload/files/pimadenorilidulobisotiliw.pdfIn PDF document text
    • https://joinvita.com/neu/userfiles/file/kawowababisegawovanepu.pdfIn PDF document text
    • http://azizolace.cz/images/file/51258944171.pdfIn PDF document text
    • http://adbrf.com/files/fckeditor/file/1135012722616750d8be1d8.pdfIn PDF document text
    • http://all-premium.com/user_file/files/60161819114.pdfIn PDF document text
    • http://madiran-cruduparadis.fr/ckfinder/userfiles/files/43874464286.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/51247591370.pdfIn PDF document text
    • http://hejia-ele.net/upload/voxugovupukajasalopezukuf.pdfIn PDF document text
    • https://shibbirs.com/media/files/63781058405.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149ec0ae82e3---rupusute.pdfIn PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/wikube.pdfIn PDF document text
    • http://ankurgroups.com/userfiles/file/96341288752.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/161e7e6d86df8c---jerogexu.pdfIn PDF document text
    • http://ehoron21.mn/uploads/files/62530273214.pdfIn PDF document text
    • http://noithatvietsky.net/media/ftp/file/vaxuripinedivupugapurov.pdfIn PDF document text
    • https://southafricapools.com/contents/files/wusanokakawopaginipimem.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/uva646l7ijk7hqg1outfl13ouh/wajiri.pdfIn PDF document text
    • https://ever-progress.dacola.com/upload/files/wobotizabulo.pdfIn PDF document text
    • http://crislbd.com/public/admin/assets/ckeditor/kcfinder/upload/files/38483913188.pdfIn PDF document text
    • https://adm.ativo.com/js/kcfinder/upload/files/xuvijizubefotas.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/TSvcnjQ06Jg/uplcv?utm_term=girl+with+flaxen+hair+debussy+sheet+musicPDF 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_off0006de84.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006de84.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006de84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE84 11200 bytes
SHA-256: 04bba537ae403181d76dfc85092aa4c2373baf67748ccff39a8688d2d8505fc4
font_01_sfnt_off0006f8a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8A3 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00070f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F3D 8240 bytes
SHA-256: 7b484dcd509359b818e4eac7412e9e7460c448efe2914af8a83f8b8b6d7d6c0a
font_03_sfnt_off00072a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A8A 19112 bytes
SHA-256: 8d280f44040d98e1ce13f23d02bf50c36b5c4240521de1e865d2e99628fa7d8f