Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87adcb3a52b5240…

MALICIOUS

PDF

95.7 KB Created: 2021-06-10 05:33:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 65ad1ef9a2115ea209b2053cc0245f8e SHA-1: e8e95bd7c07d89e2c6feb618125321158f700bc9 SHA-256: f87adcb3a52b52402412f1e4ff300614c98cd4424bb0d5eb82a9d61c008d38c2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm pointing to numerous compromised WordPress sites, likely intended to host malicious payloads or phishing pages. The document body, though heavily obfuscated, suggests a lure related to movie downloads, aiming to trick users into clicking the malicious links. ClamAV detection and ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7153

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://queure.ru/uplcv?utm_term=sri+ramadasu+telugu+movie+mp3+songs+download PDF link annotation
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c019ff840fe---vijupizumawuregofimuwoxuw.pdfIn PDF document text
    • http://aucoindeshalles.fr/menu/file/momakebanarowiralubi.pdfIn PDF document text
    • https://jdrum-music.com/uploads/ckfiles/files/53722306991.pdfIn PDF document text
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/20s372q57emiqv7lukcdm1k5h4/sogenumakirezi.pdfIn PDF document text
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/05776e60e5c2683c8c5e36e988eee874/74093509899.pdfIn PDF document text
    • https://www.demetagras.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a24898e9a---39707373339.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/8386c1588897a4b84d4f3b53264e682b/lujuxegojex.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/pedada.pdfIn PDF document text
    • http://beerskiboot.de/img/upload/file/9143289437.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607b18f7af144---86119576285.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b45611df9d0---85623102869.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/58b948ceedcc17739a74e67e18b68a54/15849153025.pdfIn PDF document text
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/qnq1agb45prk70sn87a6099r67/31929146797.pdfIn PDF document text
    • https://scanclean.bg/upload/ckfinder/files/15962504169.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/669d697584c8f13680aa915fb641ff10/vevane.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609012831b00e---demaxanepesivuje.pdfIn PDF document text
    • http://brkvinc.com/userfiles/file/dalimuzagoreza.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/326df8862837f42b3b516d09761b505b/jutidibawekeliwi.pdfIn PDF document text

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