Malicious PDF — malware analysis report

Static analysis result for SHA-256 725f20d4472c0359…

MALICIOUS

PDF

121.5 KB Created: 2021-06-27 07:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3c500c9cdce971a06f0b5fe97a378839 SHA-1: c3c630f1bfd87dc4179c550436cb897b30a0538f SHA-256: 725f20d4472c03596604e053a49680f5000de405eba295e10bf6840028e051f6
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a phishing or redirection attempt. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to lure users to malicious content or downloads. No scripts were extracted, but the link farm structure is a common tactic for distributing malware or conducting phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160760c1e7e93d---gaxulo.pdf In PDF document text
    • http://dfwsedan.com/nbloom/fckuploads/file/23673996093.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/daf88d717ef98339fc3219d4bc574f1a/lixijuzakulesusoxovuro.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805acce209b---41461122458.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/558e855f1e5e3965e97c03ff324e6833/70985654565.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/e58a0a79a86d3077a2d313b8126896f4/79623250582.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/299ebcddb443110180144a448e177dec/25470042223.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d74bf26e63---78078505128.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/249b001ead109c54f3643ff9703ac466/22044422708.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/adfnb8ggt8e1kgqp62i722ho3j/25682896107.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c516f152a02---78201382422.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/bcaffb8fbddfa171ce1e1d9197c5449a/vuwugasilazifirukejagak.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/4c3ee55b871ee25422c296e231e00f79/zumuzojuvakuf.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/4ddnd3232p2r4prn11t03aopg5/wopusisedegob.pdfIn PDF document text
    • http://shuswapladystriders.ca/userfiles/file/38856995260.pdfIn PDF document text
    • http://101-games.ru/images/uploads/files/vakawab.pdfIn PDF document text
    • https://szaniterplaza.hu/ckfinder/userfiles/files/zabipakakidavakeguri.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16075fc5bcf944---56008525052.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/4f72imv95octvg9bgu7h2obh5t/fitemusu.pdfIn PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/9b7efe6ef3fdb153090838865e1f92e1/radisasujo.pdfIn PDF document text
    • http://hillsdale66ersreunion.com/clients/c/c6/c679c52642bc64dd8629b98fb95ccc77/File/fameluk.pdfIn PDF document text
    • http://samuiluxurytravel.com/Uploads/file/5462866233.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bc89197bc5f---madamojisixixavumujumon.pdfIn PDF document text
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/e16p7j6ppg90c0453godbebkuo/71193280648.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/cf976f756b4255841bd027f306969785/sokaso.pdfIn PDF document text
    • https://kraftyz.in/ckfinder/userfiles/files/1463214236.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=fate+best+order+to+watchPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16EEE 10428 bytes
SHA-256: 0c914d8ffba65a1d6ecd6202b8590d9a0b6ad24bdc9958c595612b2231353ee0
font_01_sfnt_off000186c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186C2 2672 bytes
SHA-256: 94cc9d200f995a44aef89865a1110c5e7a5898d83975a73e6473104110de263d
font_02_sfnt_off00019234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19234 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001aa46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA46 17784 bytes
SHA-256: 6ee2b2c506efd21f49f2d22273b1b3817b8f773e512f1a18e3380a7e658d2d45