Malicious PDF — malware analysis report

Static analysis result for SHA-256 c17491cf84e5455a…

MALICIOUS

PDF

57.0 KB Created: 2021-08-12 12:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 7f7c0ac46ac212460407f262d3b9a0d5 SHA-1: 769b19ac25954e649052b0091a40d5ed50cc7618 SHA-256: c17491cf84e5455af0c48238e3f5df4799bc7cdf2b5abdf71666e7149d920273
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised CMS upload storage locations and disposable hosting, suggesting an attempt to distribute malicious content or conduct phishing. The presence of numerous unknown URLs indicates a broad distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8348

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://buergerforum-tirol.at/file/morebe.pdf In PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16081bf58315ed---49651759032.pdfIn PDF document text
    • http://ceroki.com/image/files/64259480934.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/95237856189.pdfIn PDF document text
    • http://taispacedesign.com/upload/files/416092228.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160856a5523edc---90516614026.pdfIn PDF document text
    • http://xn----otbb6ahq3d.xn--p1ai/ckfinder/userfiles/files/burepefimitesinad.pdfIn PDF document text
    • http://rayanchem.com/d/files/zamidonuvakurogunifuv.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/eaf759312b74a26147c32b6199666de7/32973990716.pdfIn PDF document text
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609fec4e70343---35011147933.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160982f869ead3---zexazojed.pdfIn PDF document text
    • http://starringthestricklers.com/clients/2/2b/2b6f34f03d9ccbd43d04a050b3ab825e/File/jabekamed.pdfIn PDF document text
    • https://retake.dk/ckfinder/userfiles/files/kupinir.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/4805a8e4b5bf1685a5b7aceaf1413c52/fazeluvak.pdfIn PDF document text
    • http://rajskiewakacje.pl/userfiles/file/18247668563.pdfIn PDF document text
    • http://pastoret.it/userfiles/files/58982425484.pdfIn PDF document text
    • http://www.cddfct.com/up_files/file/93964079187.pdfIn PDF document text
    • http://quincy.pl/ckfinder/userfiles/files/dudeziwifisufugijejerok.pdfIn PDF document text
    • http://sistersaviopublicschool.com/userfiles/file/27419809746.pdfIn PDF document text
    • http://tuanayapim.com/rsm/files/84033027572.pdfIn PDF document text
    • http://teleinwestor.pl/userfiles/file/kamadodopukonud.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/i17ks7odqjomgp913gbhlrkjij/88241330360.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160a95c7d286ee---xapekarutazuravelitukop.pdfIn PDF document text
    • http://bularz-auto.pl/images/userfiles/file/vowozesesibixor.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16090e1658115c---31854051724.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=shahih+fiqh+sunnah+pdfPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.