Malicious PDF — malware analysis report

Static analysis result for SHA-256 05585c2ee2f64f08…

MALICIOUS

PDF

87.8 KB Created: 2021-06-27 08:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: addfacab2565d09883349b123558c642 SHA-1: ae777e581b748c565fb99c39377a75cf3eb68038 SHA-256: 05585c2ee2f64f0849596938dfea0610eb5ae5bd0c86796b556c24b1e056b7d2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to numerous external URLs, some of which are hosted on compromised CMS platforms. The primary purpose appears to be to lure users to potentially malicious websites through a deceptive collection of links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://say-international.eu/userfiles/file/99143118647.pdf In PDF document text
    • https://mps-india.com/userfiles/files/15698642940.pdfIn PDF document text
    • http://diysmart.net/userfiles/file/16944989275.pdfIn PDF document text
    • https://clinicscrm.com/img/files/77691155039.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/6kme3bsfqts21knu41a50o26t8/nizej.pdfIn PDF document text
    • http://mrsinternationalbeautypageant.com/clients/8/8c/8c0f0497d7166b07b5568c04be8084ca/File/zejunofuma.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/b58b27f59193f88b8f898de03123306f/61238851857.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/8bcaca71bbf8bf163d6f8b593b2645b6/sokanew.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/iugjs5an8sfajcrugss1bovql1/88486564690.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/1dde0b44e42f14401ca09653ea6cf678/reziraxilejakenudemupe.pdfIn PDF document text
    • https://deniz-sogutma.org/img/userfiles/file/tekowevisemudepiromulo.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/0562a8b4c616e0337b657aaf9da76e1f/39507636709.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/bb9d91ba1c17578229025d06a20f2cf9/janame.pdfIn PDF document text
    • http://thefjordbaklawfirm.com/clients/876731/File/rasarutinuwanilide.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160d7ea0ec72fc---zakibumibutotu.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1529eda16cdf3a8e661b98f569531048/lejoxasolelolaguxuvejisek.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/b35c316474d38411f10c001fc1e1e502/zisorofenanekejodovel.pdfIn PDF document text
    • http://buyyoutubelikes.com/ci/userfiles/files/34296913287.pdfIn PDF document text
    • http://recrute.fr/files/files/44479160310.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/52e2b44dc37b5284ebde296721671f78/34071175835.pdfIn PDF document text
    • http://ucinnovation.ru/admin/ckfinder/userfiles/files/57499525220.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160a4492774f80---99553007799.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/4192530056.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/nvhercjb985ubup2vu8rk6bas1/19072374915.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2424206283---13097628553.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=classification+of+fungicides+pdfPDF 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_off0000f158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF158 10824 bytes
SHA-256: b7f9940bed8a93e9cc31f20515fc0c04d714da53ef782557f62e405d8d3e332d
font_01_sfnt_off00010a39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A39 18052 bytes
SHA-256: 14aeccdea3a70c065106066f6831f3ea2e4650aeebcd863cc75cd1d591417e4a
font_02_sfnt_off000139f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1