Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c612ebf139e9f0…

MALICIOUS

PDF

115.2 KB Created: 2021-06-27 02:24:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: d6a6d23213e599f1f7b0cbda40f9925b SHA-1: 57be220a4b1af7c8fc79c595e156a0e992df4b2c SHA-256: e0c612ebf139e9f05c68b1491e075280e7e4330e5e83fa9ef3ac546b1155ed33
154 Risk Score

Malware Insights

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

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware delivery. The presence of multiple links on disposable hosting and the use of UTM parameters suggest a coordinated effort to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6077

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 https://crewmak.ru/uplcv?utm_term=chess+3d+for+pc PDF link annotation
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d68a4b03c---fuxumav.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a39145edf60---64063765302.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/4s2u7kkgk4307t631dhk2rvgb7/82398238694.pdfIn PDF document text
    • https://raiporjai.com/piceditor/file/fiborozuzegekadosa.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d6a793ea475---zofizibeluzup.pdfIn PDF document text
    • https://sambelteri.com/contents//files/46097383430.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/a1470a065e70db323a60b052bfc76cf4/tojikupekewukimogatajan.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/vivuwasorurune.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/rikugiwarapamevo.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/82268517228.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/87955f9198e385e440f192115ea716c7/84762944119.pdfIn PDF document text
    • https://sudhirsachdevaclasses.com/ci/userfiles/files/78760970748.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/5a4b4df6fe50f1568483a7f608a1959c/lorofi.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/6bfe8a51073ce359a254265899c6ff5e/63416023352.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/93097657372.pdfIn PDF document text
    • https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed2707fac4---zowerotuzumigebi.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607343a30af04---86238248480.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606e27b9e7d5f---83265946704.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1607f86d39ba2e---76218106010.pdfIn PDF document text
    • http://englandmatchshirts.com/assets/file/74532900630.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/b924f4d4511087fa6364e013450ebe80/54657090100.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/k0a42apioeqsnnvh81irbag6k0/53133949081.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/kanolixasiv.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B2CA 10416 bytes
SHA-256: cee9374189bf07c268fd9620493de0594b43a0d3acec9a86a86ed432cd981011

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