Malicious PDF — malware analysis report

Static analysis result for SHA-256 4453669e909e85a9…

MALICIOUS

PDF

89.9 KB Created: 2021-07-07 07:26:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: 5858129e12a13db063a2ce0dc701e2a7 SHA-1: 8fc31f5a425459204906a8f930103ccbb3bf90d0 SHA-256: 4453669e909e85a9ae2b12b200d32678ed7290f10c8b1c40cc584c1c9873ba2f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

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://ketchas.ru/uplcv?utm_term=when+can+i+give+my+kitten+adult+food PDF link annotation
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/4d337f4fd65b85f07bd071f3ff6a090d/44349880636.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608c0e0b909c6---22938492389.pdfIn PDF document text
    • http://kadernictvo-svetlana.sk/editor_uploads/system/files/balonibejotug.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/8110f4b2811e0cb20d539d79593ab099/sijabanuxo.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///13727893405.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1da05d6457---nakupinikorolagim.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/227f448db420163d014ac2d467c0c0b6/gutuloboxamewibubukafo.pdfIn PDF document text
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/1344269f2a05df71af3c41dfd45436e6/75238292301.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/1dd4964dd9b52b1f5f687e58945dbb9e/papefagumogumawo.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/f19a5cf89952fafbc52b6f29d7b7712d/73871044284.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5420a437a---malofew.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160738c0270b84---32231110073.pdfIn PDF document text
    • http://xn--eyt274i.com/upload/files/43789082743.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1257483da---47607353174.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607cef8b876d7---rulapojurudixara.pdfIn PDF document text
    • http://skonasystems.com/userfiles/file/61433485385.pdfIn PDF document text
    • https://avgdesign.com/userfiles/file/90070137650.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/dalegetimifere.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c01d7e793---78670857132.pdfIn PDF document text
    • http://szao-spb.ru/images/news/file/83318972767.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/37612089166.pdfIn PDF document text
    • https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/0f7i6mni9p3alkr6fsl3u179o5/saviromefamaguwogo.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/mlkjjtmvdgrq2je66afmr4lp2s/kibegipuwozibuwudorug.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/14114582463.pdfIn PDF document text
    • http://ehomeforeclosure.org/images/file/26447921392.pdfIn PDF document text
    • http://crystal-lamp.ru/uploads/files/gumutosu.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_off0000fcd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD7 16896 bytes
SHA-256: b4d1681353a44f8549f86b30a9ad7ec2a62c70d2a827cfae056c3d65acb64238
font_01_sfnt_off000128ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128BA 11020 bytes
SHA-256: 1399995485947dc7c85ffef7cb8b45622ec3ec58c1f75b5ae699d79fdbe63c40
font_02_sfnt_off00014205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14205 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1