Malicious PDF — malware analysis report

Static analysis result for SHA-256 5523f7152b431f04…

MALICIOUS

PDF

449.2 KB Created: 2022-01-21 21:42:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: b6bb51623b35885de66c102c7477c11c SHA-1: 5830d333622e2a1212609b95b6cde769b1c61975 SHA-256: 5523f7152b431f04763206cc955b6a8aae1c5b62ea689a3b18fcf7543a7770fd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4712

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://mgrima.com/files/file/fezewodifereduverum.pdf In PDF document text
    • https://ooo-kenk.ru/userfiles/file/zofifavuvusukenosot.pdfIn PDF document text
    • http://yas-center.ru/userfiles/file/77116819148.pdfIn PDF document text
    • http://cjcounsel.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/57835030807.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/exurisusitimorupali.pdfIn PDF document text
    • http://ydchem.cn/filespath/files/20210906140547.pdfIn PDF document text
    • http://casopisfolklor.sk/assets/kcfinder/upload/files/sivavufipatemafegesewema.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/161794367c74f8---43986773614.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161b27b7cd1e6a---jorizuvasolu.pdfIn PDF document text
    • https://jotelek.hu/files/file/43652349780.pdfIn PDF document text
    • http://brushes.tfe-design.dk/userfiles/file/lakelubuwasexulomekimenit.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1618aa6f0a61b2---dowinuxugokul.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c6c30d77b5---vuxaluvapowezolubutetorow.pdfIn PDF document text
    • http://sxnqx.org/upload/file/Fl202109271958343793.pdfIn PDF document text
    • http://gartenmessebau.de/uploads/files/lewojemenumisedigugope.pdfIn PDF document text
    • https://coebmsf.com/userfiles/file/namov.pdfIn PDF document text
    • http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1619b978fee734---97059018389.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130a5993ab89---31476930023.pdfIn PDF document text
    • http://motopujcovnateplice.cz/userfiles/file/wogobidaximupotibubobilid.pdfIn PDF document text
    • http://franceplus.fr/userfiles/file/vapojezafaxonijufotijute.pdfIn PDF document text
    • http://swotaweb.com/img/upload/file/96269789111.pdfIn PDF document text
    • https://kattliv.com/kattliv/admin/userfiles/file/dozawedake.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/84d3e6f4c141b96f80140d0936ffeef3/kejaromove.pdfIn PDF document text
    • http://metallpress.ru/files/30581172878.pdfIn PDF document text
    • http://isagenixmakessense.com/ckfinder/userfiles/files/98421698496.pdfIn PDF document text
    • http://lexnovum.pl/js/kcfinder/upload/files/nukeverijuzixudom.pdfIn PDF document text
    • https://aymsoft.us/aym_image/files/41924598135.pdfIn PDF document text
    • http://aspbae.org/userfiles/file/78900056822.pdfIn PDF document text
    • http://wdnederland.nl/file/makoxuv.pdfIn PDF document text
    • http://tataservice.it/userfiles/file/33157501976.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/u-9XGpgKpwY/uplcv?utm_term=carolan%27+s+concerto+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_off00069a09.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00069a09.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00069a09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A09 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0006b0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0A8 16892 bytes
SHA-256: 664a38817817d225e71f97c663c1975df12d1be434d3944b2a4de8f4cf14b6d6
font_02_sfnt_off0006dd09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD09 10660 bytes
SHA-256: 18edf241eb2819bcd37f207437f375aa2e50b95ce893ce05575162c1927befdd