Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14995b8884f30bf…

MALICIOUS

PDF

64.0 KB Created: 2021-09-15 11:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 46376759f49ed546e5b57bd06c6b6270 SHA-1: f3f627ee4d843c3443f5806ee28c622f76b262f5 SHA-256: b14995b8884f30bfbc3df858714514cc81df4049071f6efaef8b42d02a346596
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a PDF containing a link farm, with numerous embedded URLs pointing to external, potentially compromised, domains. The ClamAV detection and heuristic firings indicate this PDF is designed for phishing or malware distribution, likely by luring users to click on these links. No scripts were extracted, but the structure suggests a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4667

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://infrive.ru/uplcv?utm_term=best+book+for+android+development PDF link annotation
    • http://lemonsport.hu/upload/file/56986286485.pdfIn PDF document text
    • https://www.loisirs-auto-occasion.fr/ckfinder/userfiles/files/werosorukipukelit.pdfIn PDF document text
    • http://elrey-uslugi.ru/media/file/fogazofim.pdfIn PDF document text
    • http://regcureguide.com/files/files/48585665879.pdfIn PDF document text
    • http://opersan.com/file/1444261508.pdfIn PDF document text
    • http://ebd.su/UFD/7623/files/kiraxagarir.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/55350252309.pdfIn PDF document text
    • https://mimpidia2.com/contents/files/sudidovinabokoxuro.pdfIn PDF document text
    • http://prmakeup.com/Image/files/tupib.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/barebosogixiki.pdfIn PDF document text
    • http://kelvista.lt/images/files/27935642888.pdfIn PDF document text
    • http://nikkenj.com/userfiles/file/pofenanogoteg.pdfIn PDF document text
    • http://chpcentre.com/files/file/kutigoro.pdfIn PDF document text
    • http://pujcovnanaradi-tvarozna.cz/userfiles/files/31693172284.pdfIn PDF document text
    • https://terlickodds.cz/www/www/fckphotos/file/13458137150.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614047547fbe5---zijopamizebilefubimulalax.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc98de4843---zigitaxetebapurawe.pdfIn PDF document text
    • http://caythuocdangian.net/images/files/15540162992.pdfIn PDF document text
    • https://408of53crownstreet.com/assets/media/files/dijugukemameranotapesemow.pdfIn PDF document text
    • https://hotelite.in/userfiles/file/zukadapunu.pdfIn PDF document text
    • http://www.ih-consultant.com/ckfinder/userfiles/files/89967731347.pdfIn PDF document text
    • http://langfordfinancialservices.com/userfiles/files/40263822297.pdfIn PDF document text
    • http://jobcred.com/rk/jobcred/uploads/image/file/82985088006.pdfIn PDF document text
    • http://parentini.it/userfiles/files/bemonixavuwozaviguveb.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16140d54ed2474---67250373712.pdfIn PDF document text
    • https://malashealthcare.com/userfiles/files/zipijogi.pdfIn PDF document text

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