Malicious PDF — malware analysis report

Static analysis result for SHA-256 191e21546c319e6e…

MALICIOUS

PDF

71.2 KB Created: 2021-09-07 11:58:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: 0aaede0b44895b8a6c386a4373b19919 SHA-1: cd5d17665e041426933e2b3c090e461c71f8927f SHA-256: 191e21546c319e6e9ed6ab960e34b4fa87d0658bf7ceb1b6fe1013a9a2944ade
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160708f7a34517---71640415010.pdf In PDF document text
    • https://confidence-ist.mktechsol.com/ckfinder/userfiles/files/69891964281.pdfIn PDF document text
    • https://www.varishastalari.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076414d0746d---fawegiwaruseg.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/35360371319.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/gotukovevebapupa.pdfIn PDF document text
    • http://gopherandsquirrelcontrol.com/admin/images/file/dumoma.pdfIn PDF document text
    • https://dijitalsanat.link/upload/files/32529607589.pdfIn PDF document text
    • https://machnik.net/ckfinder/userfiles/files/49122307483.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/2f1r7ktvgchlgjml2ob7n8muf0/12168279818.pdfIn PDF document text
    • http://nessium.net/userfiles/file/80698866937.pdfIn PDF document text
    • http://dansecyr.ca/pdf/file/wikotarin.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ac89d654fde---dabilixexomerezobujadul.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f354084b0f---bumivuduvilakajibagedened.pdfIn PDF document text
    • https://emotionalgift.com/ckfinder/userfiles/files/10835319997.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607965319aff9---4739945052.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b15ed125bb3---29074380156.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160da3ab792cac---25370612803.pdfIn PDF document text
    • https://siphouse96.com/wp-content/plugins/super-forms/uploads/php/files/eee4c979e3c7068c4e1825467d713e30/93233737431.pdfIn PDF document text
    • http://oakgroveschoolheritage.com/clients/b/bc/bc5c94904a1f00f1300372e6f875146f/File/70612823476.pdfIn PDF document text
    • http://cowmoo.org/ckfinder/userfiles/files/76202066456.pdfIn PDF document text
    • http://studiobardinisrl.com/userfiles/files/82154173329.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=ensayo+sobre+la+lucidez+pdfPDF link annotation
    • http://crossfit28.com.s125853.gridserver.com/siteuploads/editorimg/file/zutaledizibapoxetafi.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_off0000b3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C9 10912 bytes
SHA-256: 1c241605e2c2c38ca3b9294cca32693cc51f03f68a77418c0b3139b2a0a5bdc2
font_01_sfnt_off0000ccf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF3 17380 bytes
SHA-256: 7753001c2572c550861843d1c24e9788ec4174f16600d180071d2a24c5dcfd67
font_02_sfnt_off0000f777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF777 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1