Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a00bb1e1dc9ec8…

MALICIOUS

PDF

49.0 KB Created: 2021-06-17 07:25:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ca624b508efa555ef761028214e22ea6 SHA-1: 19a92fba3f22cd552099c3d082a4b4972f80514e SHA-256: 09a00bb1e1dc9ec80100a29431ab69995e4c876f2cd8c173ceaceefb666e4392
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content or phish for information. The presence of embedded URLs and the nature of the heuristics strongly suggest it is used as a lure, likely via spearphishing, to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7193

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://philabc.ru/uplcv?utm_term=manual+de+procedimientos+de+la+empresa+coca+cola+pdf PDF link annotation
    • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/15012209893.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/939af6b757af459b1938c05fe6d11a0a/zuwepebulewot.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a2d8ee37aba---pidebubo.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/f1c905c2679ea971d4c2899a751db4d2/2634604247.pdfIn PDF document text
    • https://www.visitrwanda.com/wp-content/plugins/super-forms/uploads/php/files/fd90c4d5ec1900a1ae2d93e5bc988eff/labuf.pdfIn PDF document text
    • http://accu-chek-event.com/ckupload/files/fejazujotipoxu.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1606cde9106398---duparopaxiv.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/87ddbfeccb15b5164b8845e65c237e5e/zaposekuweju.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1d52d1aa49---99488905781.pdfIn PDF document text
    • https://willmarlakesarea2040.com/ckfinder/userfiles/files/xomobenuramoguloja.pdfIn PDF document text
    • http://compufoxmail.com/userfiles/file/wupiluwirurisekisazo.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1284b965b9---tirogarinumimasi.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/401f23a53f1892e2ca0e4926f707d877/50080779068.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/pc89jd2a5t4mosb05dsvcrfugn/3920027811.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607936e66c8de---sopopatorifideb.pdfIn PDF document text

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