Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dcf7bd0f320826…

MALICIOUS

PDF

72.0 KB Created: 2021-09-03 09:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: ad7dcec88961d395727d0bb48f6c9fd1 SHA-1: 68e6bffeadc7fa3e4783c7af83272b8d79071a4b SHA-256: c5dcf7bd0f320826e95f7f98fa0f43ebe920ad6e130d0c3244e5f5721546e6a5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd5293e5588---kupitozumofabixeriw.pdf In PDF document text
    • http://mdsalon.ru/img/lib/file/kapuvegaw.pdfIn PDF document text
    • http://vintageguitar.ru/ckfinder/userfiles/files/xakexasesadijepaporo.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/fe08ea257d2ba26fc23c232f295280ca/88679308652.pdfIn PDF document text
    • http://metallpress.ru/files/fenabekal.pdfIn PDF document text
    • http://jlm-kg.com/uploads/file/70160525843.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/1c98ssqp92onkeokaig7si3fa6/zexaximusamafu.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/5bfj3nsj124d8t7uhnh9v4v1vv/25279177624.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/k057levouve0paqm8epuevlse3/36926782014.pdfIn PDF document text
    • https://dintek.eu/uploads/file/76798304194.pdfIn PDF document text
    • http://stressmanagement-karriere.de/userfiles/file/gijetaxafubanezefelex.pdfIn PDF document text
    • http://www.elitagida.com.tr/wp-content/plugins/super-forms/uploads/php/files/eqhpigkaf9fstl3u6a5vhoqb02/29641050093.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a8dc5d7fa3d---55067791176.pdfIn PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/repitimegoxekolola.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/furumuvu.pdfIn PDF document text
    • http://izumrud38.com/ckfinder/userfiles/files/85036609814.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/a00621a81faf6351b201f954c95e8bf8/47653078696.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/pesovizenajederibevu.pdfIn PDF document text
    • https://aventura-agence.lu/userfiles/files/jigonasovalazipururozuvef.pdfIn PDF document text
    • https://biblioteka-koneck.pl/ckfinder/userfiles/files/jobizekuta.pdfIn PDF document text
    • https://hbphoto.ca/resimler/files/19460704889.pdfIn PDF document text
    • https://ensasoft.com.tr/wp-content/plugins/super-forms/uploads/php/files/rou8122q3i8bfp5df08cpto5up/1438654504.pdfIn PDF document text
    • http://makaroma.fr/upload/file/83331555326.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16082468bddd1c---vuxumol.pdfIn PDF document text
    • http://faradbox.pl/files/file/59957573867.pdfIn PDF document text
    • https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160795890dfb4d---1103843650.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=math+worksheets+for+third+grade+multiplicationPDF 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_off0000b7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7B1 15728 bytes
SHA-256: 713d92e17b1c83fd50ca261a393a6b16b712cec56577d642154e450ce61ca075
font_01_sfnt_off0000dfd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD5 11340 bytes
SHA-256: 631999e2df14d3a0b971e34dfa15f8357cc9de274b20de053d2b8b5f3d950440
font_02_sfnt_off0000fa3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1