Malicious PDF — malware analysis report

Static analysis result for SHA-256 941511b0c89f9cb1…

MALICIOUS

PDF

161.9 KB Created: 2021-08-08 19:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 23c8d3aad5dbcb5186a61ae1cd2d5fa3 SHA-1: e24a70f7af7dc6c71aa3e1923ce27ef6dcb9e659 SHA-256: 941511b0c89f9cb1fa2a3358b462b9f318783933c74b84ba450f691278f79fd9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9522

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 http://farmina.ru/uploads/files/72967226711.pdf In PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/2jgtc1rr522ab2mrgif5dk8jj6/14926717163.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cf5c4e184---serugowujumewu.pdfIn PDF document text
    • http://regimhotelierbucuresti.com/images/userfiles/pidavemiwukaxekitoworubam.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608783efd1b0e---nodivusarusuvovotezo.pdfIn PDF document text
    • http://bettaletroom.com/file_media/file_image/file/padutosimapebonob.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a5de4109c46---74518368178.pdfIn PDF document text
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/ich5t32mvti9kkk3rajjmkibgh/supuzujademumetoxix.pdfIn PDF document text
    • https://migger.dk/userimages/file/wexesawufiwajomafina.pdfIn PDF document text
    • https://pasarantogel.com/contents//files/belowuzeli.pdfIn PDF document text
    • http://marketypik.pl/zdjecia/fck/file/nimawagosukajozuv.pdfIn PDF document text
    • https://harpethvalleyhealth.com/wp-content/plugins/super-forms/uploads/php/files/89b85484d86da9de9d79ef8c06797605/20355292101.pdfIn PDF document text
    • https://landbondcorten.com/attachment/file/1f0f803666686f111a5f86f387557f12.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e96cc3723d---26184574678.pdfIn PDF document text
    • http://miwon.com.vn/app/webroot/uploads/files/fonamajip.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/9190813844.pdfIn PDF document text
    • https://anmimar.com/royal/userfiles/file/31327551291.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c61f96aae---5689464046.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16081bf8e55cd8---10680151245.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/5dm7hkjuonbo4s1tq23usf93p2/71611204674.pdfIn PDF document text
    • https://maturana.cl/upload/file/diwokizupil.pdfIn PDF document text
    • http://geometrarontani.it/userfiles/files/gukelunevebuxa.pdfIn PDF document text
    • http://homenet-spb.ru/userfiles/file/70324242390.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/b3090abd13971e57e81c4fd9e547dc43/46714493534.pdfIn PDF document text
    • http://lakshimi-kaatsu.com/user_data/packages/default/imgfiles/3716108664.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=birth+of+jesus+christ+story+with+picturesPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f3c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F3C2 19076 bytes
SHA-256: d31b021bcda42b1cd9ac5b37a702f600152b97ebae6bb114b46f1bd41710e2fa
font_01_sfnt_off000211fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x211FA 10748 bytes
SHA-256: caad6d4a96ec51435d00a599a731f991715235e14f5d4c23347ea4a136fc0acd
font_02_sfnt_off00022af3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22AF3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00024305.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24305 21004 bytes
SHA-256: ea030ae6bdb90028a8fdb51dda9ac1c9b76fe493b5edff5541966786f58878d5