Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbe31b420b3ab28e…

MALICIOUS

PDF

312.7 KB Created: 2022-03-19 17:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-23
MD5: ebdf7dcbd8244ac33aac3591c8ab586b SHA-1: 71c96c995287d3219db8e05f8627a41d525e6182 SHA-256: cbe31b420b3ab28e35afffdf0fc38eee71e33d266cf5fdd558c315dc1de62ca1
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7246

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://weldbook.net/upload/files/padojekofu.pdf In PDF document text
    • http://flussobjekte.at/kcfinder/upload/files/lewifazutoxojuxumafok.pdfIn PDF document text
    • http://captainkillmite.com/uploads/files/202202071959559197.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/1620b687d59d43---94804674197.pdfIn PDF document text
    • http://archgeo-leszno.pl/uploads/userfiles/files/fixujufiwanavazosasefev.pdfIn PDF document text
    • http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///70437935326.pdfIn PDF document text
    • https://femagnet.com/upload/edu/article/file/tujumidopalipejew.pdfIn PDF document text
    • http://bep-au.theonejsc.com/userfiles/file/36224639337.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1621a36f296a06---lodereremobovinovarusexe.pdfIn PDF document text
    • http://artepcb.com/upload/files/37547041289.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/vefasezugisidim.pdfIn PDF document text
    • http://chiesamadremarsala.eu/userfiles/files/78546142479.pdfIn PDF document text
    • http://salamino.pl/userfiles/file/simedonugukizowot.pdfIn PDF document text
    • http://safetyservicecenters.com/userfiles/file/tinadasodibosamasa.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/16223655b65c6b---xovigarekejusibesa.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620cc2df3a9e4---98697766720.pdfIn PDF document text
    • http://bcf-plv.com/kcfinder/upload/files/41018778595.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1622bf39b302b8---lolikazaxumekufagexerova.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620e8ea90c936---debolumiji.pdfIn PDF document text
    • https://pabxlg.com/userfiles/file/86677428842.pdfIn PDF document text
    • http://sgiworld.com/cache/fck_files/file/tunegafuvimimarufojosip.pdfIn PDF document text
    • http://drapa-technika.cz/UserFiles/File/tibefiliduzusodulin.pdfIn PDF document text
    • https://siliconautomation.com/userfiles/file/94280633600.pdfIn PDF document text
    • https://listocrm.com/userfiles/files/80754918358.pdfIn PDF document text
    • http://sabancilojistik.com/userfiles/file/galuvofomenosufu.pdfIn PDF document text
    • http://specialcats.nl/media/files/18585286006.pdfIn PDF document text
    • http://www.colfacor.org.ar/administrador_web/kcfinder/upload/files/33542539423.pdfIn PDF document text
    • http://lindendirect.com/ckfinder/userfiles/files/7350768930.pdfIn PDF document text
    • http://weldbook.net/upload/files/54472689061.pdfIn PDF document text
    • http://pololanna.com/user_img/files/250216925.pdfIn PDF document text
    • http://raudhatuljannah-gma.com/assets/kcfinder/upload/files/mutovajofu.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1620b0f09580f4---sodagurunamaluxado.pdfIn PDF document text
    • http://www.conepe.org.br/public/ckeditor/kcfinder/upload/files/71505515522.pdfIn PDF document text
    • https://demoepaper.104portal.com/upload/serback/files/20220307065210.pdfIn PDF document text
    • http://hueide.com/upload/files/sipuni.pdfIn PDF document text
    • http://cresapumc.org/files/file/tafedizax.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=bluestacks+3.+0+1PDF 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_off00047404.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00047404.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00047404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47404 10464 bytes
SHA-256: 7aec0dabb7a3660ebd6abb1b2da5dfc80560025e4c7d4b7431cfd0ccee2f5aa6
font_01_sfnt_off00048c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48C1A 17796 bytes
SHA-256: bdcefa15b018e3a5b03af7f2597412fcd0448f11cb9db2f2c5a59d8941b629bf
font_02_sfnt_off0004bae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BAE0 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9