Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a1b34fe5bd9d65…

MALICIOUS

PDF

74.7 KB Created: 2021-09-22 19:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f18b5f8c449937c3c07d2e3d1db60874 SHA-1: 59b623bd54307825aeb9b972a707f0d9a7144e80 SHA-256: 94a1b34fe5bd9d656aa7fb8bea0239eb5a123abc10fcf694362f87dcb1d5a3b6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers. It contains numerous embedded URLs pointing to compromised websites, including WordPress upload directories, suggesting a phishing or malware distribution campaign. The presence of external URI links and link farms indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6633

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://huntic.ru/uplcv?utm_term=various+regions+of+electromagnetic+spectrum PDF link annotation
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/7kqh4t450uu7la7vh0rdlemuq4/kezijim.pdfIn PDF document text
    • http://vegman-kzn.com/ckfinder/userfiles/files/65590793599.pdfIn PDF document text
    • http://vamaconsulting.sk/userfiles/file/62194523337.pdfIn PDF document text
    • https://cncostruzioni.com/userfiles/file/95074906984.pdfIn PDF document text
    • https://carmelocuritiba.com.br/ckfinder/userfiles/files/nudojowalebaxikumasisolit.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/161488733a154b---luramaxudurut.pdfIn PDF document text
    • http://artmetinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147943991de5---35313896395.pdfIn PDF document text
    • http://lishasurgical.in/ckeditor/ckfinder/userfiles/files/50715070888.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/546152799.pdfIn PDF document text
    • http://criminisiepartners.it/userfiles/files/jotetuvumuxasexox.pdfIn PDF document text
    • http://xn-----elcksuhhemsi4e.xn--p1ai/files/files/97445804772.pdfIn PDF document text
    • https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/lr4lf5rk9de0ugo2623540ar2m/77207079715.pdfIn PDF document text
    • http://talentfuturesservices.com/sharpinstitute/images/files/30734119677.pdfIn PDF document text
    • http://indagosrl.it/userfiles/files/nalufefugepipeja.pdfIn PDF document text
    • https://drticket.ir/basefile/drtiketcom/files/16734318150.pdfIn PDF document text
    • http://jun-travel.com/userfiles/file/8141835929.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/40101598291.pdfIn PDF document text
    • https://groupits.cm/uploads/fck/file/mesutupakuwuvovixekuw.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/6b23265c6e590997c85edcd7afbbbb74/1515820669.pdfIn PDF document text
    • http://badgerhillfarm.uk/6985260051.pdfIn PDF document text
    • http://archbot.pl/files/file/zepozejevafuserosebu.pdfIn PDF document text
    • http://www.autoservis-hubatka.cz/admin/upload/ww/file/nuxakagesuweni.pdfIn PDF document text
    • https://supermagnum-bg.com/userfiles/file/26067150118.pdfIn PDF document text

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