Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8f33e246b0a470…

MALICIOUS

PDF

101.0 KB Created: 2021-09-05 01:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 9b115baf566dc678f94f3c6090252192 SHA-1: b3aecb493759b01d090f29322871bdf98aa434e3 SHA-256: 5d8f33e246b0a470da6767c9563b48d366157a7c2390e347fb8b680a0156a235
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

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://nomylo.ru/uplcv?utm_term=droit+d%27enregistrement+maroc+2017+pdf PDF link annotation
    • https://wscnaturalhealings.com/wp-content/plugins/super-forms/uploads/php/files/682bff420cca3ddbeb0ac2a667bd5241/9507393151.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/36b74c95400e83b5b7eeb41ed64ebe2d/nijixet.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/v89og4pce176lja8v9e5vac7q7/gabumak.pdfIn PDF document text
    • https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080c78b03caa---1798455850.pdfIn PDF document text
    • http://klhl.com/userfiles/file/kosobivigojujonumiruw.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a340722a0b---3441557042.pdfIn PDF document text
    • https://bloomland.com/sites/bloomland.com/files/95260139751.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/4e2540132d68d473cddf340d818406fb/58423442551.pdfIn PDF document text
    • http://ledson.ru/upload_picture/8717348355.pdfIn PDF document text
    • http://worksafeorg.com/wp-content/plugins/super-forms/uploads/php/files/t4hmtihie2dit12gjjktt8dv14/46279365042.pdfIn PDF document text
    • http://hndgyl.com/v15/Upload/file/202186751335202.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/7fbd522463942f0f89dce00dbf0f19e4/54483121870.pdfIn PDF document text
    • https://upchealth.net/wp-content/plugins/super-forms/uploads/php/files/5da10f95ec11a23876e4e33d82fa66f0/livegan.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3cad61cb7---jujatofulalavugugam.pdfIn PDF document text
    • https://nhachoxebus.com/upload/fck/file/37104658734.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/c58s8nvh9lpf5724harfe82f71/lemowafosoxizebom.pdfIn PDF document text
    • http://joewhitefamilysite.com/clients/59967/File/34050279401.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ffbe5b8b6---77248201316.pdfIn PDF document text
    • http://deborahmayerlawoffices.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/97010029724.pdfIn PDF document text
    • http://acrclubinversores.com/files/galeria/files/50269115913.pdfIn PDF document text
    • https://senhewood.com/d/files/kiworonexabifujazad.pdfIn PDF document text
    • https://electrodomesticaruano.com/images/ckfinder/files/jugegufinoj.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/bonezubufaxu.pdfIn PDF document text
    • https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883a79a3e8a---82907212290.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/temukozi.pdfIn PDF document text
    • http://www.hgekc.com/media/userfiles/file/36133333437.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_off00012013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12013 11296 bytes
SHA-256: f80ed455f9352edabd992f85de0e1f18e1afb79b7c4e4cd7ca86be4785e3b03d
font_01_sfnt_off00013a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A8F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000152a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x152A1 19732 bytes
SHA-256: d87b370275684ebfa73317323acdc1c4f425cb3f8ce0a3cfce2b3e81097d20f5