Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1408f13a875067b…

MALICIOUS

PDF

62.5 KB Created: 2021-09-04 22:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: aa5fb66e3c868a27554ad6b3d22e8046 SHA-1: c0070e26611e04cce5b6363c2f22e2248f28f667 SHA-256: f1408f13a875067b384c783d9bc90e4b32a85c457fe746b1c4fa97dbe2d9fb56
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ML classifiers and ClamAV, with heuristics indicating it functions as a link farm pointing to compromised websites. The PDF contains numerous embedded URLs, many of which are hosted on disposable domains or compromised CMS uploads, suggesting an attempt to distribute malicious content or phish users. No scripts were extracted, but the overall structure and URL patterns are consistent with a phishing or malware delivery campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8029

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 http://eyupsifalibitkiler.com/resimler/files/kefexudafedu.pdf In PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160869fdd359ba---malepirasolutaxajov.pdfIn PDF document text
    • http://unite-chem.cn/upload/files/fixulupawosizomusozala.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/62533322599.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/dffe17afd9de947ca17ca144a6862c58/75870394728.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fed4847c37---nulesarefosata.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607752b719ee1---buzodejivoxipal.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1611afd62c8d24---75916519103.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160716d7dab5ac---wisotiwinegizobixadevisox.pdfIn PDF document text
    • https://sfeerweter.nl/userfiles/files/roriruvifamimifotezidino.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/4ac3e77771d967c75fb2878682512198/vitiwibunoviwitad.pdfIn PDF document text
    • http://mas.vacations/wp-content/plugins/formcraft/file-upload/server/content/files/1608266858ea85---70667268691.pdfIn PDF document text
    • http://richmediahouse.com/admin/uploads/file/35119836304.pdfIn PDF document text
    • http://chrisdepanneservices.fr/Sites/cds/files/74556057198.pdfIn PDF document text
    • http://www.psoealora.es/ckfinder/userfiles/files/25596960830.pdfIn PDF document text
    • https://doctmcooper.com/userfiles/files/seribijekemorev.pdfIn PDF document text
    • http://www.toptehnik.si/images/jekuwurigagonigajeles.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/965a7a0a2e5ce89bb13c59f2ad197aa2/lepez.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/nikixaxi.pdfIn PDF document text
    • http://ff-engineering.com/userfiles/files/71550060957.pdfIn PDF document text
    • http://freehajjandumrah.com/admin/admin/uploadfiles/file/72309079057.pdfIn PDF document text
    • https://dauglita.lt/components/com_mijoshop/opencart/image/data/files/kemametewazewamasiguva.pdfIn PDF document text
    • http://huntland.hu/upload/file/bateziru.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b0db697284e---84103529977.pdfIn PDF document text
    • https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/10439075294.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7788198ff---22221168733.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=analysis+and+interpretation+of+financial+statements+notes+pdfPDF link annotation

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