Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b72b4236ba93835…

MALICIOUS

PDF

48.0 KB Created: 2021-09-06 02:47:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: ed9684809692cf4d4376d079ba9b3707 SHA-1: 74b40f5bf4103caaf8a6619bbe7241ef6d90186a SHA-256: 1b72b4236ba938352a4c94e61f4fd73fc0f412ca993cc60d6a268e24f7d2f002
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links to external websites, many hosted on compromised CMS uploads, suggesting it functions as a link farm for phishing or malware distribution. The presence of embedded URLs and the overall structure point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8101

Heuristics 5

  • 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
  • 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://smidgel.ru/uplcv?utm_term=melaka+tourist+map+pdf PDF link annotation
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/3120792d96b13f310a45ae8ad580e943/32701780429.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/48b6161a1319dc2c84331fd9a68e460b/xevakirisa.pdfIn PDF document text
    • http://stacjaregeneracja.pl/userfiles/file/43450499319.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a3aa530300e---pufesoda.pdfIn PDF document text
    • http://dzbnf.com/upload/file///fomoxotu.pdfIn PDF document text
    • https://www.tvmreza.tv/ckfinder/userfiles/files/lelisibifunudiravedas.pdfIn PDF document text
    • http://antwerp-reefer-tournament.be/argt/files/wejulimupiliratenaz.pdfIn PDF document text
    • https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/o24t94slc77vem06d2e2ggh5f8/80639621264.pdfIn PDF document text
    • https://kamedia.vn/data/file/93081122110.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a81903285e5---49751511313.pdfIn PDF document text
    • http://federalwayhighschoolclassof1970.com/clients/8/8c/8ce2019516a67423f07d8eefa67dd611/File/95938731224.pdfIn PDF document text
    • http://studioingegneriavaragnolo.com/userfiles/files/68157724582.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/re66argkoiakkc4qp0kvtrc5r2/kojilovovef.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/5970ac5bc2b9669a2812a3def2280c6e/77880303653.pdfIn PDF document text
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/578ad337cb3d9a3efe8337a7cda962c7/semopovibadubuj.pdfIn PDF document text
    • https://mamotato.ro/userfiles/file/dogisamevugufilupojo.pdfIn PDF document text
    • http://pressvaluation.net/userfiles/file/sidavizoziwijilajafusoki.pdfIn PDF document text

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