Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb848c612d9c5e53…

MALICIOUS

PDF

266.4 KB Created: 2022-04-03 22:00:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-08
MD5: b6d8148ddf111daf1f3dd054dbbe877b SHA-1: 9bc70787a3cad355df4329720d0f871fed495abf SHA-256: cb848c612d9c5e5337661d78e7a69396ed6ece3a90a72a4c0d729e53f7e2c71b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6316

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://loheb.co.za/XSRYdR1H?utm_term=the+physics+of+blown+sand+and+desert PDF link annotation
    • http://africareview.in/userfiles/file/zesomogepiradekilovokugi.pdfIn PDF document text
    • http://climtech.com/files/files/64355984735.pdfIn PDF document text
    • http://candientushinko.com/images/file/lesow.pdfIn PDF document text
    • https://elearning-chemistry.ro/userfiles/file/dubigaveg.pdfIn PDF document text
    • http://sushi-belovo.ru/files/21661914537.pdfIn PDF document text
    • http://abdobson-new.simplywebeditor.com/site-uploads/rofupovupakobuba.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/mesibabafamazewumesenure.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/162081cec2206d---govifisuge.pdfIn PDF document text
    • http://islamsamara.ru/upload/files/85091193626.pdfIn PDF document text
    • http://driscollandgibson.com/images/edit_images/file/68294236408.pdfIn PDF document text
    • https://www.southdownscellars.co.uk/ckfinder/userfiles/files/82399320467.pdfIn PDF document text
    • http://www.mkfilm.it/ckeditor/kcfinder/upload/files/17858204948.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/162181562ea293---lifosotedirimiwede.pdfIn PDF document text
    • http://siamsnail.com/media/userfiles/files/34619366217.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1621acadb34f87---32670306735.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/fibofisesat.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/nuxabejefajavobakosikalex.pdfIn PDF document text
    • https://ccs-corporation.com/ckfinder/userfiles/files/1154588134.pdfIn PDF document text
    • https://www.houseofwax.cz/kcfinder/upload/files/gowarodupisas.pdfIn PDF document text
    • http://www.forsheda.se/admin/kcfinder/upload/files/32096673253.pdfIn PDF document text
    • https://kupro.bg/upload/wyswyg/files/xanipika.pdfIn PDF document text
    • http://indemo.pl/Image/files/52589204222.pdfIn PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/nedusixubiwaxenu.pdfIn PDF document text
    • https://kuraniterbiye.com/resimler/files/rukarimegolafegixi.pdfIn PDF document text
    • https://sartor.ru/upload/files/76988636469.pdfIn PDF document text
    • https://samsungvrvklima.com/upload/ckfinder/files/kuwowufaferaranudajosubar.pdfIn PDF document text
    • http://private-dev.cliczone.fr/upload/userfiles/files/38815980248.pdfIn PDF document text
    • http://purepoem.com/resource/docContentImg/file/2022-02-07/738076c7fd43758d27ea113f90a5c367.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623e82335a6e3---83732831223.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622a79561bb1c---49316087891.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/344de64bded7e315df20164d2ef84d9d/67067521768.pdfIn PDF document text
    • https://vietfun.com.vn/wp-content/plugins/super-forms/uploads/php/files/8mj6s6nj1n388uv0sf8jabi4lh/15442204752.pdfIn PDF document text
    • http://servis-hradec.cz/files/file/nuzuvoxoman.pdfIn PDF document text
    • http://sassanoproperties.com/FCKeditor/file/12962836885.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16208deb2c45e3---gutetadarezane.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/takid.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/xaxetotofi.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_off0003ba0c.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003ba0c.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003ba0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BA0C 17508 bytes
SHA-256: 48081fac0f4a87ef83e4cfb0d84a431d8643fc7054c0beaa91f3271b673f0b15
font_01_sfnt_off0003e828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E828 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0004003f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4003F 11020 bytes
SHA-256: 3fbdd7f2230d77d77c93afacce7fb19592859ecd91e7dda1c1a539425b3c5d67