Malicious PDF — malware analysis report

Static analysis result for SHA-256 1916928047e89170…

MALICIOUS

PDF

71.7 KB Created: 2021-09-28 20:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 9b8864e50af61074f6c8946e8fa3b4a9 SHA-1: 4a45b60de006bec3a8a47395754f42e3d65d63b5 SHA-256: 1916928047e891704d81d4ca1dae3c3aeace0d5603a55f2a6084b92d7e68e8b4
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9837

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.findvoters.com/userfiles/file/punizefafabetumaxatuje.pdf In PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16149eafbefcec---22380603236.pdfIn PDF document text
    • https://granitabrasive.hu/editor_up/52823403037.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/0f40b521286a7bf6b8943e8de1e56dfa/gupoxumunajomexovero.pdfIn PDF document text
    • http://kimura-shihoshoshi.com/userfiles/file/91899842506.pdfIn PDF document text
    • https://invision.buzyhub.com/files/votazewebizo.pdfIn PDF document text
    • http://klm-co.ru/foto/ck/files/roxumek.pdfIn PDF document text
    • https://supremeroi.com/FCKeditor/file/38701556067.pdfIn PDF document text
    • http://sirindhorn.net/upload/File/vonekepipuvogog.pdfIn PDF document text
    • https://archcosmeticstudio.com.au/wp-content/plugins/super-forms/uploads/php/files/4e9843c96a61b7f8b590ab404953f8c6/fakuvisofozudobikafe.pdfIn PDF document text
    • https://webhostmurah.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410a379b640---xegoridurakobalewopewisop.pdfIn PDF document text
    • http://smingames.com/ckfinder/files/16799994757.pdfIn PDF document text
    • http://td-mg.ru/uploads/files/genadavozexoxap.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1612fb7eeedacf---lifamiji.pdfIn PDF document text
    • https://oncallanatomist.org/ckfinder/userfiles/files/lopuvowefixinosirarix.pdfIn PDF document text
    • http://bagliodeimille.it/userfiles/files/xepowipovavarobu.pdfIn PDF document text
    • https://kurishupally.org/userfiles/file/mamareretu.pdfIn PDF document text
    • http://www.startbatteries.gr/ckeditor/ckfinder/userfiles/files/givuba.pdfIn PDF document text
    • http://wolfroccatiassociati.it/userfiles/files/22793630553.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147b9088c13f---mipodaxulivitizulumamupi.pdfIn PDF document text
    • https://playerpress.com/ckfinder/userfiles/files/maravim.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/16152751baeaec---zesezewejavopikoje.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/161387ade21555---xeromobaka.pdfIn PDF document text
    • http://sonhanint.com/uploadpic/sun/files/202109151103339644.pdfIn PDF document text
    • http://oshcongregation.com/userfiles/file/85259622999.pdfIn PDF document text
    • https://csp-pub.com/stockages/files/90248457677.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/b267f7a73ebe5e0396c547e1e133ea1c/dumutidunovisepisonemawaf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=the+odyssey+by+emily+wilson+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://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_off0000b6a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6A5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ceb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB7 16640 bytes
SHA-256: 28388490f2c41be96541064f8b7d2d225a22b0d93c49128023e2454d0d073aef
font_02_sfnt_off0000f906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF906 10704 bytes
SHA-256: c1c59755bb97d74068fbceba43bf0b240b8d949dae1368495a46d433f4a2aa66