Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeda92c6446ff2bf…

MALICIOUS

PDF

85.4 KB Created: 2021-06-28 13:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: daf8f454c0e90b40562e73648db00b86 SHA-1: 40a62535d3609127b307725b4546830d180deb62 SHA-256: aeda92c6446ff2bffa1612315e37e80e33c4d55e675e3642533ea92caa211251
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains a link farm with numerous URLs pointing to compromised CMS upload directories and disposable domains, suggesting an attempt to lure users to malicious sites. The presence of external URIs and link farm heuristics supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

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://stepasidemedical.com/images/uploads/file/sazakovapim.pdf In PDF document text
    • http://chonburi33.com/userfiles/file/gopinakobujefodufoli.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608d85cd8340d---9329112658.pdfIn PDF document text
    • http://beijinghuojia.cn/userfiles/file/29303685116.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d681bc12c---5389319394.pdfIn PDF document text
    • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090a3ba8b675---jukasowiniruve.pdfIn PDF document text
    • http://zulassungsservice4you.de/bilder/file/juxebelekefeb.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/0ff4b2fb4d3239632ca0e93d32e358ac/vipanopuvadesixozodubaga.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/xibagewovawi.pdfIn PDF document text
    • https://aokman-drive.com/d/files/mixagobesodute.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/2hp55et4shdsvkrotv2p53qvmj/jadobaxizotato.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/91086631949.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/0215c89438a3b6eb03c978e847ea55b5/73877377463.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d485e0e4e---sibiwoku.pdfIn PDF document text
    • https://summit-christian-academy.com/scauserfiles/files/29975478725.pdfIn PDF document text
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/f93b70c5f95fa425c4dd98d0f462819b/72819672885.pdfIn PDF document text
    • http://aj-logistics.com/stock/userfiles/file/kemuropovexurip.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090434283b85---nudisurolufizudu.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/721389eea48c325bd01833663db17c9b/lepovekobuzajolitekawu.pdfIn PDF document text
    • http://iwishop.hu/file/18859959832.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/rexutikufotetedetum.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/8b116c985bcf8e5584720afb4a5ba34e/kaziraxipubaxapemijugirig.pdfIn PDF document text
    • http://chinhlytailieuluutru.com/media/ftp/file/moketotutuzexizojojesa.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/8ah82ha9mmitssbr6ugaamte61/wozitikedajofukufejijuzin.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/n85j61rm8pbkfbk4q7v2p2jrlo/vixazepolixom.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=yes+or+no+oracle+answersPDF link annotation
    • http://e1pl2.nazwa.pl/busy/fotki/file/sapomokun.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_off0000edad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105BF 16932 bytes
SHA-256: 847f9a535ca8ebb8aa89b509aa3204c56cb8e2c7403ba4f1f8ca6fe7ce3ee7be
font_02_sfnt_off0001319f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1319F 10104 bytes
SHA-256: 9afcc1833880108c7c79110eca6bdaf16beb19bbf280af31061675846cb6e3e8