Malicious PDF — malware analysis report

Static analysis result for SHA-256 4350f10dd9f0af99…

MALICIOUS

PDF

96.6 KB Created: 2021-07-03 22:28:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 89aca707a93356fd91d41446953c2186 SHA-1: ce97d88a0367e482cd55d7a45cbf761a7cb64896 SHA-256: 4350f10dd9f0af997d774279d6f64888f86fd09ce22d7eb3581f2c2e995b7d5c
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. The presence of multiple unknown URLs suggests an attempt to distribute malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

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://ebslang.net/_UploadFile/Images/file/lejisolagufanenowenuven.pdf In PDF document text
    • http://acecaalcoy.com/userfiles/file/xijusexabutuwez.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/cb33b21c5785f41704ff4ecc4c9c943a/rewiwikoxawetidat.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0aeab5d92---568868958.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd2d30151f3---duwedowafifolozuduxiwa.pdfIn PDF document text
    • http://ukrainski-rosyjski.pl/userfiles/file/buxoseni.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/dd7c7dbece1cd8fdbce8923fc16399a5/13926879408.pdfIn PDF document text
    • http://studioarchperissinotto.eu/userfiles/files/90248024665.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/7ffc18a00ac16bc99b37ed12ee5171f9/50698955924.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cb92f03f3d---11073212375.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/160739c38095e2---kuzoxera.pdfIn PDF document text
    • https://sakkestadbil.no/userfiles/file/dizezodopejepawogurunot.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d37ec65baa---37125542630.pdfIn PDF document text
    • http://www.oneworldkarate.com/fckeditorimages/userfiles/file/ruzenetunobupeligox.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160749188d28e8---xagokudasit.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160883dcb9f2aa---muzufuxurijoduwigeve.pdfIn PDF document text
    • https://actorconseil.com/files/file/69042827555.pdfIn PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/a2ddc2581d3b7d66b1069842617b4218/3782499257.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/290624385930.pdfIn PDF document text
    • https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f736323fec---wasule.pdfIn PDF document text
    • https://office-agglo-larochelle.fr/userfiles/file/75208378208.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606d83da432fb---17854896022.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a106bacf0ee---pefexij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=autocad+professional+tips+and+techniques+pdfPDF link annotation
    • https://mediaget.com/userfiles/files/21763302154.pdfIn PDF document text
    • 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_off0000efb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB4 10944 bytes
SHA-256: 486bed4968f395c3b5154ffc8aa0e4ee972b86799ebfcc59df1224e531d7cf3e
font_01_sfnt_off000108cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CC 17820 bytes
SHA-256: 42dfe525fbc12283d540ee53b0b99208fc415bde98466548249dcead9b9fc36f
font_02_sfnt_off00013724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13724 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00014f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F32 11880 bytes
SHA-256: 35af330097f03c48b07077612f0bedfe682e80141095e960dcfbd4a6e0236280