Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc4d57dbb69b6af…

MALICIOUS

PDF

282.8 KB Created: 2022-03-08 19:54:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 311f5ae16b7a2ebe5b1ed191649aacb5 SHA-1: b518d7c8a208faf80b089b16a994eb1fc28a7482 SHA-256: 1dc4d57dbb69b6afb76b916aedc565a620fe0ff088b3446cd649d90f8cc809a1
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6687

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://mifuj.co.za/XSRYdR1H?utm_term=alcohol+phenol+ether+ncert+solution+pdf PDF link annotation
    • https://bhandarisurgical.com/ckfinder/userfiles/files/32552826590.pdfIn PDF document text
    • http://nc-israel.ru/upload/files/45064596024.pdfIn PDF document text
    • http://airholic.com/UpFiles/WebEditorFiles/file/10663890877.pdfIn PDF document text
    • http://www.psychophonie-tarbes.com/ckfinder/userfiles/files/88037797129.pdfIn PDF document text
    • https://tekartltd.com/upload/files/79650977739.pdfIn PDF document text
    • http://belcanto-evenements.com/media/files/40843647343.pdfIn PDF document text
    • http://nuitsdartistes.eu/images/file/vumogekuzeluwevab.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/1d87ebe8aeea636ceac6a878629cbae8/duvopurapokiga.pdfIn PDF document text
    • http://ccemax.com/js/kcfinder/upload/files/veledirirujakesabola.pdfIn PDF document text
    • http://studiolaviano.it/userfiles/files/74137915967.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/85376792504.pdfIn PDF document text
    • http://fourfoods.com/images/files/75490443476.pdfIn PDF document text
    • https://twinscooking.nl/twins/userfiles/file/25236078513.pdfIn PDF document text
    • http://omeofest.eu/userfiles/files/kesagutovolimeguwil.pdfIn PDF document text
    • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/katoxizeninaxoma.pdfIn PDF document text
    • https://parokaonline.hu/upload/files/gusemikisagifubogokizov.pdfIn PDF document text
    • http://xn--hh0b97d8is16e.com/userData/board/file/3920770104.pdfIn PDF document text
    • http://tcgardening.com/userfiles/file/2022020812035073499.pdfIn PDF document text
    • https://abcelectricalonlineshop.brilliantwebtech.com/userfiles/files/valerunetulepipuvaj.pdfIn PDF document text
    • https://searchkar.com/ci/userfiles/files/gusigud.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16210c43838520---10600264812.pdfIn PDF document text
    • http://a9188.com/upload_files/art_files/files/20220206_185625.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161fd828ea5ea0---56469584754.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16212a48189587---70443013611.pdfIn PDF document text
    • https://bomberosdenavarra.com/userfiles_nexo/files/90752806924.pdfIn PDF document text
    • https://fzclicks.com/demo/files/editor/file/66762780003.pdfIn PDF document text
    • https://alharithiforcameras.com/ckfinder/userfiles/files/35775710042.pdfIn PDF document text
    • http://tratyfa.com/public/ckeditor/kcfinder/upload/files/paludutuduvugis.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f99d7ddd097---vobijis.pdfIn PDF document text
    • https://soi.icami.mx/ckfinder/userfiles/files/xepizetosopumeg.pdfIn PDF document text
    • http://candientuvibra.com/images/file/36098022512.pdfIn PDF document text
    • http://pneuservischrudim.cz/files/file/57894796596.pdfIn PDF document text
    • https://kuadrifoglio.it/upload/userfiles/files/pipomewufizuf.pdfIn PDF document text
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/68386468749.pdfIn PDF document text
    • http://intertermo.nl/userfiles/file/74869455592.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/161fe7a8195c1e---26412446424.pdfIn PDF document text
    • http://takramaipai.com/mypicture/file/93120708854.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003f9a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F9A8 19244 bytes
SHA-256: 50b727a6c26857c84596075dafde8dbc221e28b8771833da3f707a013257f074
font_01_sfnt_off00042b72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42B72 10636 bytes
SHA-256: 2e6d25958db11e9746c695af94af0212ac57c26c2dac49947f9d38440e412890
font_02_sfnt_off000443b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x443B8 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9