Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0669bd3542b19de…

MALICIOUS

PDF

82.3 KB Created: 2021-06-26 02:37:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 2b1f7f8f64ddf04490e495e0398b5a66 SHA-1: 6574edd4d9aa34d0f7cbe8a4c6d5bd1a5220514c SHA-256: c0669bd3542b19deaf59ed2680edb1e1a09bf0113146935872e671c3396a02f4
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of multiple distinct hosts and a high number of PDF links further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://md-servicios.com/userfiles/file/46180097935.pdf In PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16090edd436320---kogij.pdfIn PDF document text
    • https://kovosluzba-praha.cz/res/file/52114404156.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/53679080670.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2393aab636---gorawinuzewokabamaseteg.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/1f65e7c60e1eb79a8cd0e725f9010492/wubumofekupajugenefanu.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/sabesosateguxoripezawe.pdfIn PDF document text
    • https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa8af535996---japofobu.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/r0ddp13f303oafv4sdk7q1asrt/faxawoju.pdfIn PDF document text
    • http://zelene-centrum.cz/webpagebuilder/ckfinder/userfiles/files/84789986558.pdfIn PDF document text
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607b1bfc48aea---wexisi.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160d040b851492---27429750901.pdfIn PDF document text
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606da344dad90---xizunadomujiw.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/begopomelegaxigozimobinu.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078bf6da14e0---69416183459.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/80b551cb5879184c10d018093f45bab4/84846451283.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/xaworulezezomudasel.pdfIn PDF document text
    • http://www.cafeinca.com/img/public/contenido/file/sazamulujoguresegiwa.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8i06992bmdd7kvd0kd9p6vk1u7/buvifus.pdfIn PDF document text
    • http://rydelko.pl/userfiles/file/wifoseboluxuw.pdfIn PDF document text
    • http://papaicountrylodge-longstay.com/user_img/files/jerabase.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/dcc52086806e8f5800d5f8eeefb8e3cb/50234906447.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160707915d9970---koxanokokiva.pdfIn PDF document text
    • https://tucarrorentacar.co/ckfinder/userfiles/files/1164507592.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160afb6e5d8d1d---rixinexibujudelox.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160966ed796b4f---kosaponi.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/pt1psc6pbvjdlt7o32s25445c3/87254347729.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021052602044835.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=star+ii+e+scooter+manualPDF 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_off0000dd64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD64 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f57b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57B 10564 bytes
SHA-256: 2fd305176088b96b843fedcf7ab990803390f01e433bc0da988a4bb3a430d2ea
font_02_sfnt_off00010d82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D82 17564 bytes
SHA-256: 6b996abea4bebac9c1c93a8dee64c8b7926bf8b14c795019bc35081734ff957b