Malicious PDF — malware analysis report

Static analysis result for SHA-256 e23faf64307d0612…

MALICIOUS

PDF

87.1 KB Created: 2021-07-09 08:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 8c78cf55b42e52bd4f175568cb8916a5 SHA-1: c69a8636c56de83d5625fbf03b17bbfed6bb2070 SHA-256: e23faf64307d0612bb2b08e61ebc000c59b24f59ae4102c97b22c9189d34a8df
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

This PDF document was flagged by ML classifiers and ClamAV as malicious. It contains numerous links to compromised WordPress sites, suggesting it is part of a link farm or phishing campaign. The 'Clipboard command execution lure' heuristic indicates the document instructs the user to copy and paste content into a shell, a common technique to trick users into executing malicious commands or downloading further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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://drafthe.ru/uplcv?utm_term=free+software+to+convert+avi+to+mp4 PDF link annotation
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/4ukl50rfoek1dsrpfrfae77os5/tapebedilafuvuxo.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/8fr8o56k9bdqbgojesq9p750t0/bixaxevape.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608188c619b62---69741168191.pdfIn PDF document text
    • http://emeraldoutback.com/clients/f/f6/f61299a274fa8fdb0c00f5b1ed511d42/File/zenisudipevivozokuzol.pdfIn PDF document text
    • http://tai-group.com/upload/files/sebejixosovosub.pdfIn PDF document text
    • http://sumbulefendiegitimvakfi.com/resimler/files/44604208052.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/51bd4268f46e9eccfda51abb02fa9ef3/gatawulomi.pdfIn PDF document text
    • http://anhbanglaw.com/userfiles/file/vifewurelaz.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/48257955607.pdfIn PDF document text
    • http://stpatricksreunion.com/clients/84553/File/bazidazafageb.pdfIn PDF document text
    • https://comfortinnbarrie.com/phpsites/vertical_living/uploads/file/soramamupivudezonifozega.pdfIn PDF document text
    • https://mls.lighting/wp-content/plugins/super-forms/uploads/php/files/2ac09e53e206200b4bf2867f6420e5b4/34541076890.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c6fed50090c---selilogorobizivopuxaxav.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/losarukovufo.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/d96bb4159ecefe0dfad1aa2092086ae2/51686673091.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/601495ef8e3104600baf84b646947c29/koboditajekunoj.pdfIn PDF document text
    • https://irisapp.cn/uploadfiles/fckeditor/20210707/file/16256537535053.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfde93d8833---38111433524.pdfIn PDF document text
    • http://www.jcca.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/1608252e37da58---wixawozuxuzebiva.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac603d8f535---gugavavawudasemidufuz.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/v8kuddbs5du1iifqr3ggkquujk/rurorusovi.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607968df0149a---82833200378.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/u64nlj6s1oqlkar06qtgrc8dth/4320962494.pdfIn PDF document text
    • https://uniqrelation.com/userfiles/file/97796468717.pdfIn PDF document text
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608f2c78aa7ff---68039900461.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/90973672139.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/0c88d37720775d0ed625589e22c24556/derepegizudep.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_off0000f014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF014 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10826 17284 bytes
SHA-256: 57886bb3b0a61c38f32a442b03cbaa3c2d83acdff218a25eada7ed13e619be55
font_02_sfnt_off000135c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135C5 10804 bytes
SHA-256: 12cc2c30a9291a78763d2a23d29f0d2eadc51092ed314a6d78ba33626595beb3

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