Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f09ef8e79b43ff…

MALICIOUS

PDF

252.2 KB Created: 2022-03-02 08:46:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-08
MD5: abd9feb3cb8b554b05a9ef52d8d5efb0 SHA-1: 52d406bd9d01464a6707798a82a5029f0cdf3d71 SHA-256: 98f09ef8e79b43ff0af16953ca98bcf04f337122b5c0505b81b1eeb7975a983e
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8531

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://dulichtantai.com/files/uploaded/files/75145972687.pdf In PDF document text
    • https://apgicl.com/public/files/assets/ckeditor/kcfinder/upload/files/letozezejamomibuda.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16200df6c91886---fipejedotug.pdfIn PDF document text
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/162144e58b7df4---fanopiz.pdfIn PDF document text
    • http://www.ferm-matic.fr/upload/file/mugawedamugepivik.pdfIn PDF document text
    • https://argekaucuk.com/nbg/upload/files/ginaxupu.pdfIn PDF document text
    • http://ultrabeauty-ff.ru/userfiles/file/bununonapef.pdfIn PDF document text
    • http://tetobox-budapest.hu/uploads/files/xemelobuwuwumoladexin.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161fa4a46549cd---33869500824.pdfIn PDF document text
    • http://satexvernaz.fr/kcfinder/upload/files/giparitat.pdfIn PDF document text
    • http://xn----htbccnijgu6o.xn--p1ai/kcfinder/upload/files/37222809657.pdfIn PDF document text
    • https://almuhja.net/ckfinder/userfiles/files/pefewesoxerofopepe.pdfIn PDF document text
    • https://www.ozkozel.sk/kcfinder/upload/files/zazidol.pdfIn PDF document text
    • https://webornate.com/viking1/uploads/files/lipetawudezufagurawase.pdfIn PDF document text
    • https://sunwayhk.com/louis/STARKGROUP/ckfinder/userfiles/files/52255714724.pdfIn PDF document text
    • https://pqclass.kr/imgs/file/nomituxarekisefon.pdfIn PDF document text
    • http://eternaseguros.net/files/files/vewejugefefobudu.pdfIn PDF document text
    • https://xn--80ag1a2a.xn--p1ai/files/file/32573377346.pdfIn PDF document text
    • https://sealand-pptc.com/userfiles/file/95049900269.pdfIn PDF document text
    • http://autoscuolemontagna.it/userfiles/files/busapowi.pdfIn PDF document text
    • http://secondary.oksalesstore.com/uploads/assets/files/79522446376.pdfIn PDF document text
    • http://xn--80aaaghhaztbcd1agjgbccsgfftf.xn--p1ai/pict/file/39977783314.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=distributive+property+worksheets+for+grade+6PDF 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_off000380ef.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000380ef.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000380ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x380EF 18220 bytes
SHA-256: 1b034080ad35cd05fc86349644e341b158c3638fc0d437cb8d55bb21ce08d7d2
font_01_sfnt_off0003b056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B056 11396 bytes
SHA-256: 2143d40cf211ee3f08f72b228614c6a3905001719c670689c9f4b4f602bacf22
font_02_sfnt_off0003cb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CB1E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9