Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1252e3a3534ad89…

MALICIOUS

PDF

54.6 KB Created: 2021-06-17 05:45:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3fc42d3cbe2f0bf83010683e03d14505 SHA-1: ccb5399a739c6faa7b9928766be388b1dc4ee192 SHA-256: a1252e3a3534ad89d962cc7cbcb640ebc54ef34f7219b058a02e16d80e54f857
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 a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting it's used to distribute or host malicious content. The embedded URL `https://inwebjor.ru/uplcv?utm_term=frozen+tamil+dubbed+movie+download+isaimini` further supports a lure-based attack, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6816

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://inwebjor.ru/uplcv?utm_term=frozen+tamil+dubbed+movie+download+isaimini PDF link annotation
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4ece4a55d---49720545097.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/ck9ggbf0omjtg2qe0a9u01rab2/61657486562.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8bbe7a43f---70731451828.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f045e99e8---pojeboje.pdfIn PDF document text
    • http://tano-cable.com/d/files/62027727072.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d481220bca---lowezafivisezoxasebef.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab272fa9d47---3699542120.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/0a26ab07a4053328a6e881ce3f0b94cd/45784377138.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b96b7ddb7---xikow.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca91ae0d7d---52660658024.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a5f697bc0d23ed9726a5c62bd9b37d8a/19326200947.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160820fd07f91f---59958351894.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b39bb4b31d---63820767048.pdfIn PDF document text
    • http://wumag.pl/userfiles/file/bazikaxusorilejin.pdfIn PDF document text
    • https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/f9f6140cc0101f59f16694747b11176d/dotonobimuwifemuxililot.pdfIn PDF document text
    • https://speeddating.lt/speeddating/ckfinder/userfiles/files/43103601499.pdfIn PDF document text

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