Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87cc871f5991a1f…

MALICIOUS

PDF

88.3 KB Created: 2021-08-16 15:53:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-17
MD5: 5930387ad9d32a86a580721733deeb1d SHA-1: 0bce34f86c0d17287cf69ec29ef4be7d70abfab5 SHA-256: f87cc871f5991a1f6de27c9dbdbb8b501eda00cb25c8a67f6d051413df7f88ab
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://badrivishal.com/media/29519556604.pdf In PDF document text
    • https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/6ccf2dd6fa7821c97dcc96259f892d4e/letixavizozavirubimi.pdfIn PDF document text
    • http://radio6deenero.com/uploaded/files/42931140653.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8e51d02e48---tekuvimefevatu.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/e5e94ef7ab96ea7ed422bca9cfcf2fb2/suvobudilonukemule.pdfIn PDF document text
    • http://star-transform-moscow.ru/uimg/files/xurizigem.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a962740b0b2---98806666477.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608443f092d54---vifapevuvadivuxuvijoman.pdfIn PDF document text
    • https://pilisilovaskert.hu/ckfinder/userfiles/files/95583964462.pdfIn PDF document text
    • http://hodinovysoused.cz/upload/file/72778061306.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a426e4c4405---38569922867.pdfIn PDF document text
    • https://www.sanier.pl/wp-content/plugins/super-forms/uploads/php/files/kdohb9f68hrdjcttuujh7p9fq8/90125469663.pdfIn PDF document text
    • http://pamat.ro/UserFiles/file/duvujakewuxegimig.pdfIn PDF document text
    • http://evevoyance.fr/adh/.-/file/80003956190.pdfIn PDF document text
    • http://bocghedanang.com/media/ftp/file/kerirezupu.pdfIn PDF document text
    • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202105281047219033.pdfIn PDF document text
    • https://jordanadams.com/ckfinder/userfiles/files/jarokezomokegixiguwitos.pdfIn PDF document text
    • https://hanahana.vn/media/ftp/file/8333315030.pdfIn PDF document text
    • http://arcadia-fitness.es/userfiles/file/14876504727.pdfIn PDF document text
    • http://asiadomainstore.com/userfiles/file/fivafa.pdfIn PDF document text
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608eea9429d59---52102698524.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ebb6d0a898---xereratemexaf.pdfIn PDF document text
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/160f7d9af23f60---67685381571.pdfIn PDF document text
    • https://ivanda-commerce.hr/userfiles/file/sokanodone.pdfIn PDF document text
    • http://canadanur.com/resimler/files/jezenogepeziseko.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=foods+that+can+lower+blood+pressure+in+pregnancyPDF 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 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_off0000f3b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B4 16880 bytes
SHA-256: 29fa4126905734b66a81c5526983f599b6e2c19733592e71c3b9cbedf1781dba
font_01_sfnt_off00011fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000137c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137C4 11208 bytes
SHA-256: afdad07ac36d70e201259d345e56f67543a1fec4d2e9ddbbdd1783b355167407