Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0cb47758b1efc8f…

MALICIOUS

PDF

501.7 KB Created: 2022-03-20 04:51:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-02
MD5: 0fd1c25b95aaf0c3891acce9ea51c5ef SHA-1: e78ed16f2a0d6dee983d5a1643fa1e9669a565f0 SHA-256: c0cb47758b1efc8f558b5bab92133696ca393bbb6171772b86a7d70ef096f41b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4741

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://xaydungtruongsinh.com/public/assets/ckeditor/kcfinder/upload/files/99462615430.pdf In PDF document text
    • http://bekkercoon.ru/ckfinder/userfiles/files/wezevapo.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/51494953786.pdfIn PDF document text
    • https://pacie.vn/web/uploads/files/65582122396.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/162150776696fa---74980040803.pdfIn PDF document text
    • http://wish-pharma.com/upload/files/wirujikab.pdfIn PDF document text
    • https://aleksandarshoes.com/storage/files/ripasex.pdfIn PDF document text
    • http://gerd-pollak.de/userfiles/file/dapovuwemomuribofi.pdfIn PDF document text
    • https://uncme.org.br/Gerenciador/kcfinder/upload/files/38768401521.pdfIn PDF document text
    • https://parfumzone.ro/files/file/dafobexetunedomuvefu.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16201026b6217c---99235845358.pdfIn PDF document text
    • https://kalashad.com/userfiles/file/ruwobanibudanero.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/5d2738dad129349ca6ba3c9790506aca/92534204419.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/23990085009.pdfIn PDF document text
    • http://intproplaw.com/admin/uploads/file/netefusubiganotomeba.pdfIn PDF document text
    • http://cz-synergy.cz/data/file/95334435636.pdfIn PDF document text
    • http://nordicwalkingturak.hu/_user/file/vorebevudilosasetarus.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/162066344b5527---6068794867.pdfIn PDF document text
    • https://cevhertemizlik.com/userfiles/files/surilizitelevode.pdfIn PDF document text
    • https://jcmimoveis.com/userfiles/file/zofoteribazobikujono.pdfIn PDF document text
    • http://www.anpecv.es/gestor/ckeditor/kcfinder/images/files/10032523038.pdfIn PDF document text
    • http://bapassamarinda.id/assets/ckfinder/core/connector/php/uploads/files/bujese.pdfIn PDF document text
    • http://radtel-sport.pl/userfiles/file/nadigazadepudawupedurike.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16209a1005b94b---zufemaneviwekemive.pdfIn PDF document text
    • https://bishopsalamatkhokhar.org/userfiles/file/82643645583.pdfIn PDF document text
    • http://ovodaprojekt.lenti.hu/feltoltes/files/58135250364.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=3d+wallpaper+hd++photoPDF 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_off0007650f.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007650f.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007650f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7650F 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00077c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C2F 10284 bytes
SHA-256: be7717039396da2d9e4fbaf6197adb94e6226a7eb1eed14d94308db0a6e1701c
font_02_sfnt_off00079382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79382 19856 bytes
SHA-256: 76a923d684e31356130f787a4d707e4998bd89ca87f03d53b5689f222a13ea1a