Malicious PDF — malware analysis report

Static analysis result for SHA-256 258fd64fbc9b2662…

MALICIOUS

PDF

360.2 KB Created: 2022-03-15 09:45:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 9af1255babbecfdb2dfe168038ccc171 SHA-1: 454cd3eb7aa822065b4faec5c0f384d0a4acf0e9 SHA-256: 258fd64fbc9b2662487c9ea567e2cdca8807aa41fdf3f2bf289072d159c99bce
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6543

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://cafij.co.za/XSRYdR1H?utm_term=energy+transformation+worksheet+answers+6th+grade PDF link annotation
    • http://www.clinicainthera.com.br/kcfinder/upload/files/50757966345.pdfIn PDF document text
    • http://nordicwalkingturak.hu/_user/file/vudupasemugolarepeli.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16213ed8563d58---kovapugagi.pdfIn PDF document text
    • http://sgrdinstitutionspandher.org/sgrd/userfiles/file/75377085694.pdfIn PDF document text
    • https://sk-elektron.ru/ckfinder/userfiles/files/75538790779.pdfIn PDF document text
    • http://www.acs-pack.fr/kcfinder/upload/files/zesiderosulif.pdfIn PDF document text
    • http://archifolder.com/userfiles/files/119120753.pdfIn PDF document text
    • http://riccaassociati.eu/userfiles/files/ninapukapana.pdfIn PDF document text
    • http://4226080.kad.tw/kads/ckfinder/userfiles/files/labebes.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/bikogoxifuwimixuluv.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fef29c9c9d2---99438583191.pdfIn PDF document text
    • https://www.centralleiloes.com.br/admincentral/ckeditor/kcfinder/upload/files/1492721940.pdfIn PDF document text
    • http://md-servicios.com/userfiles/file/niwunemitep.pdfIn PDF document text
    • https://www.yulava.es/js/libraries/ckeditor/kcfinder/upload/files/nizufi.pdfIn PDF document text
    • http://bochkari24.ru/pic/file/13436546344.pdfIn PDF document text
    • http://metaphorcreators.com/kcfinder/upload/files/tumajowezixibuxipokagemo.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621fd53a5cc90---7277190336.pdfIn PDF document text
    • https://temahr.hr/files/41273048328.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/c49131742869e8b5b8546ddcefbd0ecd/51352687988.pdfIn PDF document text
    • https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620ceb4e9dde6---39810906852.pdfIn PDF document text
    • https://testgit.begurholidays.com/uploads/userfiles/files/bijoloximubedozaxosekigi.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20220307121703199.pdfIn PDF document text
    • http://svazekobciorlice.cz/userfiles/file/nazufijumeb.pdfIn PDF document text
    • https://nordiskvillaventilation.dk/userfiles/file/86265080320.pdfIn PDF document text
    • http://xn--b1agpbmdtf.xn--p1ai/upload/file/90149649709.pdfIn PDF document text
    • https://petpetmates.com/files/editor/file/lezenitidejejigigopuko.pdfIn PDF document text
    • http://sindcomerciarioscs.org.br/adm/kcfinder/upload/files/ruzovuz.pdfIn PDF document text
    • http://maschimaurizio.it/userfiles/files/gurigiwobilikomisoxo.pdfIn PDF document text
    • https://gatia.kone-equicentrum.cz/userfiles/files/75753921093.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_off00053029.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00053029.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00053029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53029 18336 bytes
SHA-256: 50c2071742b339881a8437d96e2126256498b93e1f7d1f1f27bb67ff96058f6d
font_01_sfnt_off0005601b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5601B 11200 bytes
SHA-256: b469bb1cce1023bacee4dee8c8f6cea0935cecc117a81d7fcf7d09a83c0c0f95
font_02_sfnt_off00057a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A0F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9