Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd71970fa5672721…

MALICIOUS

PDF

228.9 KB Created: 2022-04-12 23:10:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 6855b81e2104eb5513ad8c030583e148 SHA-1: 4aeeaacd54cbbae5740ffa5a76e29a31968663f4 SHA-256: cd71970fa5672721ba55a0544bb8da4fea0fc27ae1d948408a99b8e6151fb3f7
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7577

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://sunuf.co.za/XSRYdR1H?utm_term=double+word+analogy+exercises+with+answers PDF link annotation
    • http://dispensapertutti.com/userfiles/files/nugizefogobewuwajof.pdfIn PDF document text
    • https://pugiputofal.weebly.com/uploads/1/3/4/7/134740318/6745301.pdfIn PDF document text
    • http://midel.me/userfiles/file/23227115532.pdfIn PDF document text
    • http://agencies.opertur.com/uploaded/kcfinder/files/89831607274.pdfIn PDF document text
    • https://promoform.coreform.it/uploads/file/36904314126.pdfIn PDF document text
    • http://miryangpension.com/FileData/ckfinder/files/20220330_12C7692655B74F43.pdfIn PDF document text
    • https://rajidorux.weebly.com/uploads/1/3/1/4/131453086/9a15aeadd60c3.pdfIn PDF document text
    • http://resetimpianti.it/reset/public/file/kurukupafive.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/ed5edca4f6f8a382e30c51339c230a53/penavuso.pdfIn PDF document text
    • https://ludakugoru.weebly.com/uploads/1/3/4/6/134698973/611996b.pdfIn PDF document text
    • https://takimibovejexi.weebly.com/uploads/1/3/4/5/134512521/5260051.pdfIn PDF document text
    • http://daiichitravel.com/uploads/news_file/dikupeg.pdfIn PDF document text
    • http://genarchi.com/data/temp/file/34741514456.pdfIn PDF document text
    • https://milenja.com/assets/kcfinder/upload/files/suxopotekisi.pdfIn PDF document text
    • https://home-consult.lu/userfiles/files/febadavipiruxivuv.pdfIn PDF document text
    • https://gogobavisesa.weebly.com/uploads/1/3/4/6/134679340/gitezuki_wofonafakufig_tarutozukunuk_nokerisiwimoso.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/162350fbc873e4---74612369954.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/roxukuvek.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/c25d3c5f1647a468e2ff861760242a94/88455493687.pdfIn PDF document text
    • https://zafapajesat.weebly.com/uploads/1/3/0/7/130740498/pagunu.pdfIn PDF document text
    • https://www.adamtraveljordan-ru.com/mypanel/includes/ckeditor/kcfinder/upload/files/65100673615.pdfIn PDF document text
    • https://dnmpaint.com/sdcc/images/file/mikenivutujaxobofogomu.pdfIn PDF document text
    • https://sukienmiennam.com/userupload/files/74980329689.pdfIn PDF document text
    • https://kuxunudizovisaj.weebly.com/uploads/1/3/4/3/134321976/2925311.pdfIn PDF document text
    • http://etre-belle.su/images/file/76638056761.pdfIn PDF document text
    • https://nocenzura.space/web/img/podborky/files/83539308691.pdfIn PDF document text
    • https://pazixepupisobas.weebly.com/uploads/1/3/4/6/134635632/7079396.pdfIn PDF document text
    • http://gruppocreta.com/userfiles/files/74042528559.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00030750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30750 19396 bytes
SHA-256: efb765d61698fca4756276b9a168d8c7f85fa670e0c731b123f0c18a5d62edd2
font_01_sfnt_off000338e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x338E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000350f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x350F8 11192 bytes
SHA-256: c95d91866da41904cadee106a5c7fea0969089fd7f1ccb9ac0b8262ef3163c31
font_03_sfnt_off00036af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36AF3 16416 bytes
SHA-256: 9e89827148f170d4bc38515d73ae405840edd377683616437240f0a2d07383d1