Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d79f5b6e8e4ea99…

MALICIOUS

PDF

72.0 KB Created: 2021-07-02 19:29:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 8a0fba51f61a69ab1b640700092b65f3 SHA-1: 8a18b05b9f665797b15343c20d36a7175b558805 SHA-256: 7d79f5b6e8e4ea9952291bb6cb2e43575d09a81882f2ea77154a7f4f5f7e043c
124 Risk Score

Malware Insights

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

The file was detected as a phishing trojan by ClamAV, indicating malicious intent. It contains numerous links pointing to various domains, many of which are hosted on compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The PDF structure and link farm behavior are consistent with spearphishing attachments used to distribute malware or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3143

Heuristics 5

  • 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
  • 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://au-zlato.sk/upload/files/ziwakakegip.pdf In PDF document text
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f9594ba1a---71597875302.pdfIn PDF document text
    • http://28777886.com/Lpf/UPFILE/userfiles/files/fiverenazemubiwaz.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a24971512f1---48692045133.pdfIn PDF document text
    • http://guowangcable.com/d/files/noburizikajewuvokuluso.pdfIn PDF document text
    • https://stehovani-ostrava.cz/static_pages_files/file/44535045643.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160ab7e143d20f---47501874484.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/a26cad23d6471c29301fbdcc8f5b949e/zeposiz.pdfIn PDF document text
    • https://inverpalmas.site/aym_image/files/74311946306.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/3lqfkbsrscv65nm9vbg2cgtpql/mugiragowuxonufukuxoduro.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/31965695325.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/353a50ffb400b6863023de05f1f7993b/kenupedivegaw.pdfIn PDF document text
    • https://charlesstreetvideo.com/userfiles/file/wimaxagefegevitesezurat.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9448a6eaf3---gidalalujiwavonoteweseti.pdfIn PDF document text
    • http://podlahypilat.cz/admin/file/14687711150.pdfIn PDF document text
    • http://przychodnia-felinskiego.pl/uploads/editor/file/46931456209.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1608f77650f19c---dagiwezu.pdfIn PDF document text
    • http://decom.pro/admin/ckfinder/userfiles/files/telexowizoxojav.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/xuwadojuxerekalif.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a982542a973---ninenu.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/3dn7cbvgj4sec8gpb0q36ga0mn/17586559656.pdfIn PDF document text
    • http://saovietgroup.com/upload/FCK/file/nafexusuwu.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/d0432234b80a4b33a1286d0c7f4257d4/buvamewaletatet.pdfIn PDF document text
    • http://tipsclubcr.com/campannas/file/jimijotekifenurezalorin.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072bbbd93f7a---mejusinago.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/580be6f1151c908985da2319c4dbe037/58608089886.pdfIn PDF document text
    • http://xn--l3chcucnqd9c0eua7b1k.com/user_img/files/94038417193.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=use+awaiting+in+a+sentencePDF link annotation

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