Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef7de59c062aa66…

MALICIOUS

PDF

99.3 KB Created: 2021-06-27 16:57:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 45898b14f21b8f295c107809061eb877 SHA-1: 16fc707f78ed9a3e46827fffcd49208720fc13d9 SHA-256: 9ef7de59c062aa66e80d98c168d63ec7d77e1675e7f6c4a904b31f6c3b1b2b6d
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, directing users to multiple external websites hosted on potentially compromised or disposable domains. The presence of numerous links, including those on compromised WordPress sites, suggests an effort to obscure the ultimate malicious destination or to leverage SEO poisoning tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

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://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/37chi85almd5k7nq4jbm0kg8a5/funagulixopopefemo.pdf In PDF document text
    • http://modnyi-buket.ru/uploads/files/peluradoboxepi.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/sofipanuviruzekires.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/38690391948.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087078f902ff---rerovusotida.pdfIn PDF document text
    • https://machinex-machines.com/UserFiles/File/75547117781.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/eec66c5c5ecc85e7a11d8c4685380528/82833419809.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a47746f1142---dikoxub.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/qgtg7oh0nihdu5er6s2avg0qo9/48415304015.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/62718515922.pdfIn PDF document text
    • http://hilimall.ae/uploads/files/15733811700.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/9cedcmmher2c87o6k5p4gcdtd6/78717451822.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16093437cba852---dozajuxem.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/2s6s37d7f13guo8889somp3l83/91081041634.pdfIn PDF document text
    • https://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/837b5f4cf09896205fbdc6b2f6299ed4/sovavawepoxudu.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/a225d1f0d01bc19f3251da52cfc6634a/bojilisisopinowir.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/9b7b8594dd81433f3de3d5efe59dd73e/lubuvewemananijomok.pdfIn PDF document text
    • http://przedszkolenisko.pl/userfiles/file/zurug.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/xewetewirog.pdfIn PDF document text
    • https://foundryindia.org/userfiles/file/85383808687.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/nafuxokinoxasob.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/85318c7c7fb0914d15d1c864f31e52b6/vowenisagijewowadivegajon.pdfIn PDF document text
    • https://repare-ton-smartphone.com/userfiles/file/nopovevi.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f95ea9f1c7---91689207748.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a5dbf25c689---73544213884.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/8101ccf1b0c180e95f05d22b22b3cfdc/94235246401.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=silky+terrier+and+poodle+mixPDF 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_off00012193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12193 10768 bytes
SHA-256: 3e78a99a9125bd157a8267e4dd69a394bb66d005b555de99789fb0e8f2757b36
font_01_sfnt_off00013a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A50 16948 bytes
SHA-256: f6ac47f2f53242d92589858188fdb05c87f30021ae2e0bc9a2207c56469b9a95
font_02_sfnt_off00016622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16622 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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