Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c0b05634b75344f…

MALICIOUS

PDF

82.8 KB Created: 2021-09-12 15:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04
MD5: 043c5d8c5c6784a6e60c3a3bc4891ebd SHA-1: 9d7cb6c1dfad1c041137b8c2e8d3323635e5329c SHA-256: 2c0b05634b75344fbf2c242cce76973fcfa30a27a2ebe0ef21a77401f499f91a
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://barsugo.com/ckfinder/userfiles/files/52193734380.pdf In PDF document text
    • http://aallergy.friend-match.com/upload/files/83722195190.pdfIn PDF document text
    • http://dietmoiquangle.com/webroot/img/files/lonefep.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/161341aa179f68---45716069777.pdfIn PDF document text
    • http://ppfi-online.com/userfiles/file/49352653698.pdfIn PDF document text
    • http://saigonford3s.com/uploads/2021-09-08/images/files/38211698011.pdfIn PDF document text
    • https://alansglobalservices.com/ckfinder/userfiles/files/pexifabuzogufe.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/b26422a442998bfbb3217743b1295aa6/sunumujovorapew.pdfIn PDF document text
    • https://www.abandassociates.com/ckfinder/userfiles/files/pugexuribadome.pdfIn PDF document text
    • http://93564497.com/userfiles/90644069234.pdfIn PDF document text
    • http://pandoraecza.com/genelresimler/file/sijinotabedopexelinak.pdfIn PDF document text
    • http://dreesmann-foto.de/userfiles/file/23804586890.pdfIn PDF document text
    • http://giaodantanthaison.com/Images_upload/files/kixonuleborijokik.pdfIn PDF document text
    • http://synergienetwork.net/userfiles/file/31840136215.pdfIn PDF document text
    • http://agroanaliz.by/upload/editor/files/22997170367.pdfIn PDF document text
    • http://officegate.biz/admin/fck_upload/file/98102137601.pdfIn PDF document text
    • http://allineers.netlovestories.com/upload/files/16616151149.pdfIn PDF document text
    • http://i-p-p-c.com/ckfinder/userfiles/files/lagaxomisekigokagejaf.pdfIn PDF document text
    • https://samavetpharm.com/userfiles/files/vegefa.pdfIn PDF document text
    • https://przyklejki.pl/userfiles/refibi.pdfIn PDF document text
    • https://lyonsinn.com/nbloom/fckuploads/file/56913606641.pdfIn PDF document text
    • http://proficlim.ru/public/userfiles/file/savikajobuku.pdfIn PDF document text
    • http://urparitet.ru/admin/ckfinder/userfiles/files/98354109325.pdfIn PDF document text
    • http://budropol.de/Upload/file/zutivi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=izzar+so+ringtonePDF 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_off0000e2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC8 16920 bytes
SHA-256: c418c623c65a75eb4617bc8f35057c9d3747670cee7492620a4ec5837a39ae73
font_02_sfnt_off0001266e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1266E 10248 bytes
SHA-256: ea960c1b1ddae3f32430d0e5b8e6ea3db1bc2448bd5c0675f9d2c41ccc246df0

Open this report in the interactive analyzer, or submit your own file for analysis.