Malicious PDF — malware analysis report

Static analysis result for SHA-256 68eb41d3f34d51fc…

MALICIOUS

PDF

83.9 KB Created: 2021-07-14 03:18:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 92c5d5b8f2d7308096f6345a782c83ee SHA-1: 46a75a02662a82d871ed5a8ca4ccf4debf008514 SHA-256: 68eb41d3f34d51fc8b14d4aea977872f067cbf5b8070ff631203e80e77f0ff4a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan. The SE_BROWSER_INSTALL_LURE heuristic indicates the document's content is designed to trick users into installing malicious software by posing as a necessary update or plugin. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it is part of a phishing campaign aiming to deliver a payload or steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609870ee9f704---menifox.pdf In PDF document text
    • http://blevy.com/ckfinder/userfiles/files/97855675781.pdfIn PDF document text
    • https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/7jggltt91l994t05hiue0kupbl/19832352199.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b47e1ff7e---82573952848.pdfIn PDF document text
    • http://stellarp.com/userfiles/files/tuwosajim.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6860254174---midibiwujap.pdfIn PDF document text
    • http://lubrifianti-auto.ro/files/file/tezogezojivo.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/1ajkbrfsresmqe89eo4hn2k5i7/31982094997.pdfIn PDF document text
    • http://delshadian.com/public/userfiles/file/wirosujakumo.pdfIn PDF document text
    • http://charivne.info/images/file/92123001244.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/rodawufarexutelisifuke.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b44391de574---minixogulejewunivotutemo.pdfIn PDF document text
    • https://aplusadvance.com/naver_editor/data/file/16247376611.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/57888865573.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7b0e0ac51---48626794415.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/9je03h5buqkvvrsd5tnfj3dth7/jutofikewavatal.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/66726205440.pdfIn PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16087bbdb4561f---kutuzabagejewupiwajabim.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/tuxosukifukanafoxigudosoz.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/c18a3gak0f91qp3fioavv51e7u/liniwava.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16071624c8ccb0---8535927842.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b4904783cb---winusixixi.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/6etc4fbttf7l6c54l3ituc9sv0/kewubekazalamemalidura.pdfIn PDF document text
    • https://stegopackaging.com/wp-content/plugins/super-forms/uploads/php/files/qn5466gbvsuaoebvunkr2p7bt2/lefupezawepatokini.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/153e2e1a21ee649933f014e63253556c/rufelupexunas.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=copy+and+paste+tiny+fontPDF 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_off0000e5ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDC 17120 bytes
SHA-256: 5b86c76ddfe969c512796a37fc5704632d928ddd8100ff5326ec35c7414cdc1e
font_02_sfnt_off00012a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A2C 10492 bytes
SHA-256: 939373d73938ea999c2d721651ca11d7f89562cc36ed82c03d6476119075bcd4

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