Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad22e94050321a7…

MALICIOUS

PDF

53.5 KB Created: 2021-07-08 21:34:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 57ca84391f8ea1967615f9ab103a7981 SHA-1: 23b06a995d249cd517431d0ef60fdf66bb54c523 SHA-256: 7ad22e94050321a7ca85f71b15a9df8817417dc557795e0f2167439e5a2e2c5e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs that point to compromised WordPress sites and disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. The presence of multiple compromised CMS upload links reinforces the malicious nature of the hosted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5591

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://crewmak.ru/uplcv?utm_term=mother+and+son+tattoo PDF link annotation
    • http://pogologistics.com/ckfinder/userfiles/files/82854482284.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/04ca48a980335a4d84a77ad0acc9e7b8/8131901533.pdfIn PDF document text
    • http://asckhn.com/acskhn/userfiles/file/61882716854.pdfIn PDF document text
    • http://tetedebois.it/admin/file/popekawadalozufuzu.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/pelugupeguxunadu.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/brv40b5134gp8vqan9j8vdr99u/16467632950.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac9d4e35c2f---pafaxugajixawisapeluw.pdfIn PDF document text
    • http://cbgnfinance.com/userfiles/file/52954142479.pdfIn PDF document text
    • http://matrixuniverzum.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a556e75bda4---77230474992.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/10a6f9dd6b262ccc3ce9d0c454302d8a/kijifulenovanavonodoj.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607bfd4967737---4344999319.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609da472548e3---vikole.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bd5c0ab2d4---24934954198.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/d5af32a19161ffc7c771e614f07de15d/dupekikewebizuvuru.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16084d42faad9b---datesotiwutiwukubilewop.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081bc71500d5---37994100481.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/78770058594.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/53643129899.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607546073316b---20036497085.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/ad5bd74b159caad648fc851414561a96/zabogexanipegejoguka.pdfIn PDF document text
    • http://canevinclassof70.com/clients/6/6b/6b8b8ee0d314e59372afbcb75100d768/File/19868015321.pdfIn PDF document text
    • https://etonbio.com/newsLetters/images/file/45980984758.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/e2e109b0ca1f2e7a1ecf30ae57418138/siluxodolakoboxobukima.pdfIn PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/2e55bc24903f014fd6d868f488fa0083/37528212133.pdfIn PDF document text

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