Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf22d26faa87b7a…

MALICIOUS

PDF

91.6 KB Created: 2021-07-05 00:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 8e07eafd5effcd314b425f586c3c89f5 SHA-1: 2a09fe0cb260d5befefb21bd6cb58282330846b7 SHA-256: ccf22d26faa87b7aff98e9b5a6b72457650d8f3c2e0ee5157c73423139d25080
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/dq2amiobe80ricftmbanpoqb4k/viwovizukudirokaguxu.pdf In PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160abb7e99a0be---deriwitaborokuvoxuxopul.pdfIn PDF document text
    • https://grupo-bahia-real-estate.com/ckfinder/userfiles/files/rixoleguve.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/3fd646d9c3ddf0cc9b8a4e2199301347/dedex.pdfIn PDF document text
    • http://lesen-und-schenken.de/userfiles/files/mopamofujavuralebiv.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a1dcb9024---vosemawoki.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/sclpi0bb48p91p4g927puap4v5/27042328762.pdfIn PDF document text
    • http://goref.ru/files/file/69585765468.pdfIn PDF document text
    • http://etpatatietpatata.com/userfiles/files/10171302512.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/om5muoat0o4cmmeo7g095ep5il/30204953388.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/313f4f80a8f6eb864d45e5e98230c659/bumifeberorigibefinidib.pdfIn PDF document text
    • http://www.aluvascientific.com/UserFiles/file/zikibedefesaji.pdfIn PDF document text
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/3a47246aa9a0d27ec74cbbacc109407d/rifabe.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/q6nipao5n3ksjfqt90sd73kb3l/69228489904.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/f89d78bcb1a296f7c95ea783e9b34de1/pavazaw.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/89128943577.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092e82be0520---65084953277.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/d734a70945a623746f0dceec09d3a314/batodojemutigul.pdfIn PDF document text
    • https://nhachoxebus.com/upload/fck/file/zikanazot.pdfIn PDF document text
    • http://dr-onesrl.com/userfiles/files/refusevu.pdfIn PDF document text
    • https://londonvipchauffeur.co.uk/wp-content/plugins/super-forms/uploads/php/files/b70f32da4701b1d7607770eec57d2c39/soxowudigikige.pdfIn PDF document text
    • http://busankid.com/webfiles/board/file///79983687563.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/d5vd6qp692e70283jpnvjopp81/36924812736.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16075de5531485---26270487641.pdfIn PDF document text
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/3aee434a75a903810e6453154a62cfb9/71003751440.pdfIn PDF document text
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092a88dd42d2---puzufitidugobabitewujen.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160905b355dfac---11401110353.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=fastest+drummer+in+the+worldPDF 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_off00010231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10231 10676 bytes
SHA-256: 6ec72fff78cec7617a6ce8dfc34568ffd0db5153f66ccd41330556c4645b0d89
font_01_sfnt_off00011a78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A78 17700 bytes
SHA-256: 3f9e8b61d207c99da0eba27a0089cf703f553300ccb216af72dd35d0fdad7e11
font_02_sfnt_off000148a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148A4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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