Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2f7d359fd567ac…

MALICIOUS

PDF

82.0 KB Created: 2021-10-07 12:05:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 09076c5d3b89b158b5b192eb163f466a SHA-1: 213e177279f3f920d91bd37a82a3e10e20a34104 SHA-256: af2f7d359fd567acd2fac79d564709a43587b30887b9d84ca5a0d0e41fae0c07
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://tndvn.com/js/ckfinder/userfiles/files/39482995064.pdf In PDF document text
    • https://dacoma.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1614915c89ebdf---73034749110.pdfIn PDF document text
    • http://tercovci.cz/files/file/85234570952.pdfIn PDF document text
    • https://fullprotec.com/ckfinder/userfiles/files/93174941329.pdfIn PDF document text
    • http://tanabuauto.com/js/upload/files/76287184164.pdfIn PDF document text
    • http://avandcie-automation.fr/ckfinder/userfiles/files/80763337076.pdfIn PDF document text
    • https://pasarantogel2.com/contents/files/jitoweje.pdfIn PDF document text
    • http://salkim.com/userfiles/file/pebenekovimotez.pdfIn PDF document text
    • https://vidaleve.ind.br/ckfinder/userfiles/files/9219199903.pdfIn PDF document text
    • http://mptech.vn/ckfinder/userfiles/files/13014356963.pdfIn PDF document text
    • http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/13580060786.pdfIn PDF document text
    • https://konzolstudio.ro/uploaded_files/file/9950944064.pdfIn PDF document text
    • http://cybernet.asia/UserFiles/File/foxivumotexirenipibaga.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1614e43077c4c7---76885567420.pdfIn PDF document text
    • https://ccs-corporation.com/ckfinder/userfiles/files/nufibix.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/523380a5c1d7bc2db0edddfa38aad1e3/teruvufowolerani.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f9f3a7aa44---73807675472.pdfIn PDF document text
    • http://yasairamenbar.com/uploads/files/tedatigawerelewogifevin.pdfIn PDF document text
    • http://cnc-soustruzeni.cz/files/file/jetoju.pdfIn PDF document text
    • http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1613e3ebe7b72e---60347864131.pdfIn PDF document text
    • https://777mto.com/contents/files/78758670813.pdfIn PDF document text
    • http://jszl-rolls.com/filespath/files/20210917094758.pdfIn PDF document text
    • http://antonellascarpittadesigner.it/userfiles/files/75390857861.pdfIn PDF document text
    • https://kampusogrenciyurdu.com/file/tilunimusof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=dependency+injection+spring+interview+questionsPDF 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_off0000dc05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC05 17388 bytes
SHA-256: c3d714c290c9c38148f26d66fce3d87f553aaacc9588c2b7b3599b840a0c57cd
font_01_sfnt_off000108ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000120c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120C2 11124 bytes
SHA-256: 49f134509fa1c6f350895742530c2e99ac3f0855840364782f13bdd829b7f1ad