Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc36a2d1f6fb93a2…

MALICIOUS

PDF

54.0 KB Created: 2021-08-25 08:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 1bcc882f3a1289d74f8bd4d0c2b011f1 SHA-1: 92ee95a7c480b4eb6721a7b05689ac8bb2d839c3 SHA-256: fc36a2d1f6fb93a2b774f0fee49e6aac2c9fc6137301b7df5a4f7e3c536be7e4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9095

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/552fb2a35903732858e1987b70712a6f/sitakivagumazapipusigik.pdf In PDF document text
    • http://teleinwestor.com/userfiles/file/52068641860.pdfIn PDF document text
    • https://markmont.eu/editor_uploads/system/files/44062397648.pdfIn PDF document text
    • https://soportedevida.mx/ckfinder/userfiles/files/66127594814.pdfIn PDF document text
    • http://optimus.org.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609b03c191c20---67117324316.pdfIn PDF document text
    • http://cppzone.ru/users//blogs/file/25849047360.pdfIn PDF document text
    • http://aimic.com/userfiles/file/surekimodu.pdfIn PDF document text
    • https://laetitiabernard.fr/images/file/61351192173.pdfIn PDF document text
    • http://xn--k1akb4c.xn--p1ai/userfiles/file/14293629280.pdfIn PDF document text
    • https://rent-1.es/ckfinder/userfiles/files/lovinev.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d5bf6e5ca---xunuzupo.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/40baa40d9abbc1f6bca331d9e4f9af7a/58179419686.pdfIn PDF document text
    • http://klubalfa.org/img/userfiles/file/52065151985.pdfIn PDF document text
    • http://metabolit.ru/files/file/1818098288.pdfIn PDF document text
    • http://ceraunavoltapizzeria.it/userfiles/files/kobesowugezozamunujivuti.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087d78bf20ba---tipemunidomatozinageremir.pdfIn PDF document text
    • http://prttour.ca/FileData/ckfinder/files/20210610_02EB5068F6115EBB.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/b1616a8a9026e7af9263e417953339bf/xenusesuvawasopa.pdfIn PDF document text
    • http://tnslib.net/userfiles/files/medapawetot.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160778d45e373b---99994686108.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/19eef6ba08e8596e0486c2d4fb848682/21828432940.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=business+analysis+case+study+examples+pdfPDF link annotation

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