Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0cc02354a3da0e…

MALICIOUS

PDF

87.9 KB Created: 2021-07-01 13:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e834354ede7bafc1254cc1a4ec4be6db SHA-1: 2539ca373df586bba2b19df77b2a2e0515bae15e SHA-256: df0cc02354a3da0e9ad5503d4a781d0afd9ad6380fa85bc2895aebd0af92c8a1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to obscure malicious destinations. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest this is a phishing or malware distribution lure. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://sclifeguards.com/clients/16854/File/61789042776.pdf In PDF document text
    • https://ajitcoatings.com/uploads/petimudarovixojofagufu.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/66380400739.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/vgclbk29grhecaflspf983jif5/sanelogavikediluruji.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/849ae482ce57666d633af73ab4b15d1e/97384710229.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607742bb07cc2---duturisovovali.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/tug7k9bvrmqlqde2aij2lq8ra7/4404209395.pdfIn PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/ef1d9ebe2ff06eca3c9be01b5cd3aad0/soginixisid.pdfIn PDF document text
    • http://vietthanhstone.com/images/news/file/31599110710.pdfIn PDF document text
    • https://twinslock.com/ckfinder/userfiles/files/faboxan.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607daa8c7fc14---ruxefit.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a835344b143---jabatemetasanagesetate.pdfIn PDF document text
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/909dfd13bc85031960b287e2845c3fb3/6975802879.pdfIn PDF document text
    • http://thehonourride.ca/clients/c/c2/c2a221447f3e921143a55eca482c8289/File/26261267397.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/kjjc4oq5fgqjlr7fmugsspfp04/dadurewok.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608c8b92486d5---11716161659.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/023f5ba64a747364ea13b8452118be44/29381104565.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16076cf7186f7a---dorejovu.pdfIn PDF document text
    • https://signika.pl/Upload/file/72104857022.pdfIn PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/21686aaddfda373265e7d40cb9032ac1/10216158986.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/1b24bf6c1348916acb69169aae1808c8/22413703530.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160995ee007c37---mesape.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c0bdb5561b9---32609426535.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/lpf0k7r0490hnstd18ebk0r5e3/8518987303.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=garland+odell+woodroofPDF 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_off0000f6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EE9 18136 bytes
SHA-256: 7787159b86d1aca65351638263c8ecccf475239b27fd2c4744cbe00430696ff8
font_02_sfnt_off00013cea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CEA 10116 bytes
SHA-256: b406c01ae10f2f0b985c5a6140fbc01160cc6f308dae5f97869382423ca37113