Malicious PDF — malware analysis report

Static analysis result for SHA-256 7939758997843e92…

MALICIOUS

PDF

100.0 KB Created: 2021-06-18 21:37:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: cbab7e412453e15b2d30c7b3c0afaedc SHA-1: 19f511ddec0ae0eabca507787a658a92ccfc5516 SHA-256: 7939758997843e928a5de9cec2cd20c7edaf6aad3f34168612d1cbf4233b42d5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://barcelonasixtytwo.com/userfiles/file/50556487854.pdf In PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/sdlqo9ph04k5hfldr9aumg9cu1/pujipadukusuwonexuluwexeg.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c322f6474a---93783719385.pdfIn PDF document text
    • http://musikpark-live.de/userfiles/file/2100962511.pdfIn PDF document text
    • http://warraichmeats.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e37754fbed---20006877045.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160932948cbfc5---55954880590.pdfIn PDF document text
    • http://hkt-optics.com/hkt/images/userfiles/file/36093090010.pdfIn PDF document text
    • http://wahluenfty.com/userfiles/migobadewaliraridox.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc292bd98a---bexamim.pdfIn PDF document text
    • http://abpaluso.com/upload/file/3679037804.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/0t89aiedoh31ml4v67p923n576/vapevedamupiniwinula.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160834a76b474a---zonevapevijomuvopa.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/c00ad1d4db7ba785a32e1afaf86801bb/99089336769.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160737bcd158f5---31309796511.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/ganesolinirot.pdfIn PDF document text
    • https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/7ed3deva3rjutjn4kbf5t88so7/50208602819.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=apa+referencing+style+guide+pdfPDF 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A51 5416 bytes
SHA-256: b187f5e51ab0588c898e615df5b2f768c3e68580e4fdad0f26f19f40c398a6be
font_01_sfnt_off00015cd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CD7 11376 bytes
SHA-256: ead12255e1699ea17a17d29c2950cb7250c90a44ad48b23d43d071b3d90e5060

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