Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e73d6754fc78a2d…

MALICIOUS

PDF

92.0 KB Created: 2021-08-02 07:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 2918d5620233c882d52294ded78ca348 SHA-1: 139d34da16e5d117c5eacd6dcc253652d8a336ca SHA-256: 9e73d6754fc78a2da284e640edefe8b3ee5df80009b24e550807a1313816aa63
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS upload directories, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, but the overall structure and URL patterns are consistent with a malicious PDF lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ce0cfadba4a---ximozalizimav.pdf In PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16078fb538222c---nikidikodiduseva.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a095fa24339---34427080385.pdfIn PDF document text
    • https://qqhanoman.com/contents//files/50266858054.pdfIn PDF document text
    • https://cr2tek.com/userfiles/Proj_Name//files/4617402783.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e510e16bbfe---jexugudofi.pdfIn PDF document text
    • https://cornerstonelaw.eu/userfiles//file/nakemumuzekojixuwesipamek.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/46025469997.pdfIn PDF document text
    • https://ottopianos.nl/files/waxewibu.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/mh1o38qub2gl2ke2ojv321cpgr/56531299529.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/fuzijogug.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bc3f27352ff---20813962726.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cf76d036fb---37844350511.pdfIn PDF document text
    • http://greece-ex.com/images/blog//file/dodurilixesowazu.pdfIn PDF document text
    • http://makingthegradetexas.com/clients/d/d4/d4716c73f098ea79da165a2194b6736a/File/fisipodixetof.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608582fed2191---jonupepesijixafudeduvavib.pdfIn PDF document text
    • https://betenrealestate.com/sites/default/files/file/64280519181.pdfIn PDF document text
    • https://olympicwroclaw.pl/zdjecia/fck/file/60308247445.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/4ee783304db3ce8a53fe78b07717e53e/begip.pdfIn PDF document text
    • http://rotarylaspalmas.orgdocumentos/file/64684397098.pdfIn PDF document text
    • https://rowadalbyt.com/userfiles/files/veliwa.pdfIn PDF document text
    • http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa7f9760eb---potiguzosiwawuzekaxe.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094d1080a7a0---neworori.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=craigslist+northern+michigan+free+stuffPDF 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_off00010410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10410 17172 bytes
SHA-256: 484f8b9156a0338bec6ebd8c1a4233e7e08544d0f511bc5032dcb3a24a139f3d
font_01_sfnt_off00013093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13093 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000148aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x148AA 10916 bytes
SHA-256: d34c7a0180555f5b47936605559a0e156e2a704e69d9bf9a7f95732aac460c02

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