Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebe209f8f596718…

MALICIOUS

PDF

87.8 KB Created: 2021-09-04 03:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6b7572667af6de3b977cb4a07286329b SHA-1: ed1a76ccb798d6def7c71694475c2d96cf8e3495 SHA-256: 5ebe209f8f5967180832225913959270cee191f75a9fa996f6b25eb7f73c12c5
196 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. Heuristics indicate it functions as a link farm, directing users to various domains, some of which are hosted on compromised CMS uploads. The 'SE_PAYMENT_REDIRECT_LURE' heuristic strongly suggests the document's content is designed to trick users into believing there are changes to payment instructions, a common tactic in business email compromise attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e56113101fe8e5cc775d5c60d1a910a9/3009690255.pdf In PDF document text
    • http://wallacewilliamsfamilyreunion.net/clients/6/66/662ca4338cd1fa41fa93b88222973dc6/File/59390996865.pdfIn PDF document text
    • http://xn--82cac8d3ajrc0gd0bo4a7nf3qg.com/userfiles/files/kumasazibimivebet.pdfIn PDF document text
    • http://csc0851.com/userfiles/file/20210618183224_l9d6h3.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/surekabazuna.pdfIn PDF document text
    • http://mingmitrcoffee.com/user_img/files/guwigukefulomasigurol.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/5oi6ib8p2les4m8stv64tqunr0/23720997867.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/16072a6d36c922---senipu.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/84c808c6bf2c0302f9239cef3e988e2a/11397557425.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/ks785ig82b56tcfa4lagoorvt4/35119310628.pdfIn PDF document text
    • http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/depawipivesupemoburasigox.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/34cc2ebcc2d84cefcd9253ef7024faa0/pibimo.pdfIn PDF document text
    • http://vako.vn/app/webroot/uploads/files/lovanewam.pdfIn PDF document text
    • http://stl-hk.net/userfiles/86308848420.pdfIn PDF document text
    • http://vaughanreunion.com/clients/7/7c/7cfe0b8ff6d5e3136a6575a9b258a09c/File/84383968452.pdfIn PDF document text
    • https://www.justgym.co.za/wp-content/plugins/super-forms/uploads/php/files/2pi5dlo88le92p4ifv7qfpqddc/95193000373.pdfIn PDF document text
    • http://interel-rus.ru/test/sites/default/files/file/31239951324.pdfIn PDF document text
    • https://drddvichitra.com/userfiles/file/53922065529.pdfIn PDF document text
    • https://albawadiroad.com/userfiles/files/seboxilazaj.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1609a14bc3f6e9---55096001404.pdfIn PDF document text
    • https://shih-tzu.ro/files/file/tazumuxavekivilelumuxur.pdfIn PDF document text
    • http://mabo-meccanica.eu/userfiles/files/ledukipoxasupu.pdfIn PDF document text
    • http://to-tuong.com/media/ckfinder/files/66117198496.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160be117ab8e4f---lajevepebo.pdfIn PDF document text
    • https://gamaconsultores.cl/upload/file/61411661153.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=financial+markets+business+studies+class+12+pdfPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABD 11140 bytes
SHA-256: 049e99f58c75167331aeec26b2b41b29ccf390651b67c4801db930765f7c5985
font_02_sfnt_off00012490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12490 17356 bytes
SHA-256: 43cabbf9ef76817949380658ca0675f5276b70681bc638b2c8732d4fa8c2e2e0

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