Malicious PDF — malware analysis report

Static analysis result for SHA-256 42559c131a8021bc…

MALICIOUS

PDF

85.4 KB Created: 2021-07-16 12:45:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: d6a99fae2301aa7f1af2fc968b097b77 SHA-1: 0fabaf3491be08759fe1cd50fff0b61ade204c00 SHA-256: 42559c131a8021bc6558753c35c3f6c82222b29cf510ef78dddbf5c07c77069b
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160999545d7eee---33957468906.pdf In PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160a5fcf817863---lagajixuwitokikajaf.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/jisirirozoladinivopusil.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b65ecf9e38c---13706870397.pdfIn PDF document text
    • https://ancoraeducacion.com/images/7571068121.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c21f9870c---guxazuzoki.pdfIn PDF document text
    • http://drive4smilesontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/wunupawetib.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160aa74d3293cf---tolusufebevijumupe.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/jaretixifipoji.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071ed36e12a6---napisojukowesuwosip.pdfIn PDF document text
    • http://dgjst.com/upfile/file/vinetupujebogesosigejami.pdfIn PDF document text
    • https://bwawarszawa.pl/upload/file/20004722846.pdfIn PDF document text
    • https://www.gurgy.net/ckfinder/userfiles/files/zoken.pdfIn PDF document text
    • http://thomas-reunion.com/clients/8/86/86f5f051d314e00f57792b8428d7085d/File/38777693986.pdfIn PDF document text
    • https://www.sixteengrams.com/wp-content/plugins/super-forms/uploads/php/files/n08k3jnmtk29fneiv7nbegcjqm/kabadekikavumimakezugu.pdfIn PDF document text
    • http://sjhrz.com/images/upload/File/92070120219.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/9d2be14ca496ed3debbcec65a7b9c811/nawerogi.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b748b9b066a---67066079867.pdfIn PDF document text
    • http://myafmc.com/clients/a/a5/a51d49d85de18111a3d718c63a5e5081/File/74212896670.pdfIn PDF document text
    • http://bagiez.com/userfiles/file/sidujerudunewi.pdfIn PDF document text
    • https://naoshima-habitant.com/88202579786.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/f1a001963dae031b2e93088e077de8ba/40156332261.pdfIn PDF document text
    • https://ntwbearing.com/UserFiles/File/motojelekipazemepam.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1868c93d5---pofajejaxawutak.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=signs+and+symptoms+of+heat+exhaustionPDF 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_off0000eaf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF5 11188 bytes
SHA-256: bd3033600a4406635f875dccf9dd831f79c779a6ccfa54dcd0f3033e13a10b18
font_01_sfnt_off000104cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104CB 16764 bytes
SHA-256: 6511e55a8912f48fa9279a21692be8e6523e19367222f0977dc3b6107fc4a259
font_02_sfnt_off00013058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13058 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1