Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca615cd2cf389bef…

MALICIOUS

PDF

244.9 KB Created: 2022-03-19 03:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-07
MD5: 08cbfc2c4e0f306996cdb4f4c411efb8 SHA-1: 7b4d591ba790094890ad4425d151fc2652335afa SHA-256: ca615cd2cf389befca03fdcd03715457845322283f4d4086296690bfaec23765
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7791

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=analysis+of+biological+data+assignment+problem+answers PDF link annotation
    • http://logicparcel.net/uploadsEditorfile/86400138195.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/f84ae446130feafec1f1fa5ebd6fa122/3990648438.pdfIn PDF document text
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/f76d35da2b360c3ea4c535eca6b1296b/ditokekarigekuragubuve.pdfIn PDF document text
    • https://kipass.fr/userfiles/file/gimunewoji.pdfIn PDF document text
    • http://thespaceproduction.com/admin/userfiles/file/wilanegepewexoburejosu.pdfIn PDF document text
    • https://hiddencliff.kr/FileData/ckfinder/files/20220202_4854A3987B52B2F2.pdfIn PDF document text
    • http://hengtongblower.com/d/files/62026214828.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/161fdde154073e---powavovaxegosuruw.pdfIn PDF document text
    • http://sea-cruise.ru/ckfinder/userfiles/files/fuxivojedobujaxawo.pdfIn PDF document text
    • https://hhwholesaleclub.com/admin/kcfinder/upload/files/rajegigozejibe.pdfIn PDF document text
    • https://borsalino.ro/imagini_ws/16994138771.pdfIn PDF document text
    • https://uncme.org.br/Gerenciador/kcfinder/upload/files/kabetisozanemasi.pdfIn PDF document text
    • https://russiandance.ru/frontend/web/js/kcfinder/upload/files/12804583673.pdfIn PDF document text
    • https://ankaratutuncu.com/panel/kcfinder/upload/files/81222217600.pdfIn PDF document text
    • http://baharev76.ru/userfiles/file/70705833321.pdfIn PDF document text
    • http://redeyeldn.com/userfiles/file/15275912914.pdfIn PDF document text
    • http://varadimasszazs.hu/uploads/files/tusujifedowatofekawowexil.pdfIn PDF document text
    • http://erdelyironkbutor.hu/admin/kcfinder/upload/files/9613699096.pdfIn PDF document text
    • http://smartbankingchoices.org/app/webroot/js/kcfinder/upload/files/tonekevezol.pdfIn PDF document text
    • https://niboparis.com/upload/fckeditor/files/kazuso.pdfIn PDF document text
    • http://aerotherminsulation.com/userfiles/file/22706332392.pdfIn PDF document text
    • http://ndt-ultratech.com/files/kerivuruxakamo.pdfIn PDF document text
    • http://milkyway-vn.com/upload/files/wetevevogoteruzeluzafifu.pdfIn PDF document text
    • https://savitravel.ro/ckfinder/userfiles/files/gamiralituledibis.pdfIn PDF document text
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/162307c752335f---virifenidonufupog.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_off000361b2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000361b2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000361b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x361B2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off000378cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x378CD 18200 bytes
SHA-256: b5055162fc0052e8b3bcc3caebf2cd9a9ef40cdbdd225ffe1d1e63b3a47bfc71
font_02_sfnt_off0003a7cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A7CF 11284 bytes
SHA-256: c141a81a1fa66846e9a02ce2be5a8ccc1694150f36941e94e74c1e6a177808e8