Malicious PDF — malware analysis report

Static analysis result for SHA-256 2460e73dcd9c3b0d…

MALICIOUS

PDF

88.8 KB Created: 2021-06-27 23:37:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a9ba456979e2d37c312eabf0b33f8d52 SHA-1: 0750554c9ab043fcc4896d3e05e8bb0ea98dd2dd SHA-256: 2460e73dcd9c3b0daa4bbb7c12c77a2555904e8b5d24071c92762194a02b9b32
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external resources, many of which point to compromised CMS upload directories hosting further PDFs. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing additional malware. The document's structure as a link farm suggests an attempt to obscure the ultimate destination and evade initial detection.

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://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/7c0ec79886a5b4c0a42f7558c8027854/powefokitabikobuxe.pdf In PDF document text
    • http://adance0112.com/upfile/editor/file/83456811625.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b9646ca223e---13792253345.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/a6ddfc0315c30a3dafc40028f7ee6205/sepozodiliripaf.pdfIn PDF document text
    • http://aliglobshop.com/userfiles/file/38258170790.pdfIn PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607aca2b07618---kimesoperenu.pdfIn PDF document text
    • http://pagyesa.org/userfiles/file/20210623085350.pdfIn PDF document text
    • https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/723853cac17f9f0f48e21178f758d825/87943882897.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070270883603---75583470726.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/r900e2n132tuvn1qjksm671oq5/pixivanudufujetilumubopud.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/51e4d81fffab461878f7e5cff27e1839/gilofo.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160829a108886e---13882315811.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609964059265e---biniperutokuzilokad.pdfIn PDF document text
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078809a29126---75805977055.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4vg2fta3ke2ot2d0mcgp2l6bt0/44049973787.pdfIn PDF document text
    • http://smepil.com/ckeditor/userfiles/files/toroneditiwufula.pdfIn PDF document text
    • http://agiusfuneraldirectors.com/files/file/39535836428.pdfIn PDF document text
    • https://unosms.us/userfiles/file/miroloxewovori.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/704da9cb51183b15850ed1abc1082105/niluxezipiworirinagofuva.pdfIn PDF document text
    • http://smit-electronic.hr/upload/datoteke/63959024776.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b61783e255---91360968284.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/vikanakagonelajemu.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/62bc9934ahl1oac4pi99tt9865/ribubumujiwimuzekuladel.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2e383bd57---12174211602.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/nbfjonns5l9abc5mii0ueb9934/68273409423.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/1a5763f2db6f8dba915f1c03852c037d/nefato.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=i+will+always+be+there+for+you+through+thick+and+thinPDF 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_off0000f349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF349 17576 bytes
SHA-256: c50bcf86c96dabfe42d09f69d0f6af7b912d62fc6a587e2e24664697f41b9e35
font_01_sfnt_off0001210c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1210C 11240 bytes
SHA-256: 792bf0dbab80976fa71ad55f0e5d2384b4d3c5606d7b6e743f68f0999c7e4be2
font_02_sfnt_off00013b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B3D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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