Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bde092ecd68dc85…

MALICIOUS

PDF

113.0 KB Created: 2021-07-07 07:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c4c938da01f2e22dbf65d78ac477a980 SHA-1: 89265db4f2573d47c07f8ec0f22ae2f39a5b4361 SHA-256: 6bde092ecd68dc853100d7853c22cddcab09bf007cc8d2400cae26e72a4568ed
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 https://huntic.ru/uplcv?utm_term=bhutan+is+under+which+country PDF link annotation
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d67257e84d1---wabun.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607fef20dfd2c---juboxivew.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a337c478849---kalekoralimulimegu.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/mo6mj99bvii0hoembnh1srhj0o/95256161889.pdfIn PDF document text
    • http://france-ex.com/images/blog//file/548982193.pdfIn PDF document text
    • http://arebiatours.com/uploads/files/putipumuxetupejanuxe.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccb2b394a6---guxixo.pdfIn PDF document text
    • https://viticoltura-enologia.com/file/24984395147.pdfIn PDF document text
    • http://bowlingkillers.com/imgdb/files/fuzezurumunudaw.pdfIn PDF document text
    • http://kledingindex.nl/images/uploads/87977082733.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/s68qg5dll9err3lno3jnadbtst/duxadarimikomebefometina.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608862e886b74---35507841229.pdfIn PDF document text
    • https://cristalensi.com/public/File/91963889987.pdfIn PDF document text
    • https://t2sc.me/userfiles/zurexuj.pdfIn PDF document text
    • https://q-web.ro/wp-content/plugins/super-forms/uploads/php/files/o1h9rb91542at17i4c60bu6kme/93636330078.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/a22350n4h5qofoq14emmffqd8t/saxasukuzanamexupiv.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fc7ed62736---rowigiza.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160724b0a498c7---38156500603.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/ieq5ran9n90u54g03ntlstle5l/97771975640.pdfIn PDF document text
    • http://anatolianlgs.com/userfiles/file/30808332593.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/12297824701.pdfIn PDF document text
    • https://getracemirates.com/userfiles/files/71617972540.pdfIn PDF document text
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/qj77ot8iqf7mtfgd0pso1kishn/farasewedijavudo.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_off0001541e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1541E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C30 19056 bytes
SHA-256: 063d5518d1e0f29ae8f9078acab1454561e3148006f6304578312ebe1d181921
font_02_sfnt_off00019c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19C9F 10772 bytes
SHA-256: 39c18d9ac8d7e4f523ea673cbc976a864e262f87f07445f2da240b017b2bfc77

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