Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed47b2d9729eb3c3…

MALICIOUS

PDF

77.1 KB Created: 2021-09-02 17:15:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 069e8d45d12f4c58affdd19a45f88fad SHA-1: dfe85d87f140097cd34e7923c2737b1ea8e6181c SHA-256: ed47b2d9729eb3c3e23a85bf19e6accf2d84b1889d9ce0f12aabb50a9636e010
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a link farm designed to lead users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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 https://anfauglir.com/images/file/siwetotolitepetafosari.pdf In PDF document text
    • http://www.dean-cpa.com/files/adminpic/file/96593901671.pdfIn PDF document text
    • https://simondaulte.com/ckfinder/userfiles/files/vemilajutape.pdfIn PDF document text
    • http://sziazsauto.com/uploads/files/rekemalaso.pdfIn PDF document text
    • http://korealabels.com/ckfinder/userfiles/files/24368371686.pdfIn PDF document text
    • http://xn--h49al33a2zdp0eo1x.com/DATA/file/20210707195814.pdfIn PDF document text
    • http://luyenthidhcanhsat.com/Images_upload/files/61921784821.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/76bdf7231158719f1276b426107c64fe/pevexopatol.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cc338f77777---xasaram.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/7rai17uom2go4p85l71trg6br5/barefilofuzijemafomoj.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbaf20ece7---929710133.pdfIn PDF document text
    • https://eetravel.net/file/xagutowofumavazapi.pdfIn PDF document text
    • https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16085c87ebda26---71318236878.pdfIn PDF document text
    • https://ldoris.com/upfile/files/20210829223132.pdfIn PDF document text
    • http://mysistermyfriendministries.org/clients/85776/File/jilexelefividerolero.pdfIn PDF document text
    • http://bbhshipyard.com/userfiles/file/85925253537.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098c363eed72---10691234749.pdfIn PDF document text
    • https://ivanamihic.com//files/sijodezuxumesolutafit.pdfIn PDF document text
    • http://arabic.cz/ckfinder/userfiles/files/35371833605.pdfIn PDF document text
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1611ebaeb71898---77346013283.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1611cbf5d7bf88---zenepavesosiduwusitetuwu.pdfIn PDF document text
    • http://4reality.cz/userfiles/files/puwotarujiwoxumalokenax.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/qshu6q7e761d5cb5nt2n8sc8uv/varubarejogoboronigasale.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d26e578df6c---dikadoxilupoza.pdfIn PDF document text
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d9a00740485---xudigitinepatikosogaka.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=manual+usuario+chevrolet+sail+2017PDF 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_off0000c5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B7 18348 bytes
SHA-256: a9c12861a9877018b2bd79d511381fce46551c4a821dfc6ff158f7970de72893
font_01_sfnt_off0000f57a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF57A 10832 bytes
SHA-256: 2c5815ec828be009aa8a96098bae4438b79687d3852277891afab43457946849
font_02_sfnt_off00010e96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E96 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1