Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6289f631dbe235…

MALICIOUS

PDF

45.6 KB Created: 2021-09-04 23:05:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 001b8b326e8625827e2277fabcd66c06 SHA-1: c971654717ad0e2ab6fdbf5f20677e90ce23d871 SHA-256: 3c6289f631dbe23565eaa188cd7dcc5e845b31819c25e2b62527a3d4e6206972
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier's high score further support its malicious nature. The primary attack pattern involves tricking users into clicking these links, likely leading to phishing pages or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7152

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 http://grandwatergatehotel.com/upfile_hotel/files/62067548933.pdf In PDF document text
    • http://libertyquad72.fr/userfiles/file/84506965432.pdfIn PDF document text
    • https://personnelcle.com/userfiles/file/16396939887.pdfIn PDF document text
    • http://change4best.ru/upload/file/91485501129.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/fifoz.pdfIn PDF document text
    • https://fanaf.com/article_ressources/file/88835445968.pdfIn PDF document text
    • http://ticaproduce.com/ckfinder/userfiles/files/setaxituxobuxi.pdfIn PDF document text
    • http://asokmontridental.com/userfiles/file/7547869387.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084aedf64e9d---xefadexejuwu.pdfIn PDF document text
    • http://nuitsdartistes.eu/images/file/18911494523.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16088a54247fd4---38158935116.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/ea43bdb24528430114e89e8e6fca8527/72270451534.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c2184d94be7---rosodas.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109d6a6114ad---bugixejenenomefomisubal.pdfIn PDF document text
    • https://www.apartamentselsllacs.com/wp-content/plugins/super-forms/uploads/php/files/alp8nfj8f7eef8q6b07n4g98bj/46977733568.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/hnatainogkq1sknuverlnpg366/pudogudewutaduwenekapa.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/0qau0n91loa5urkfnrsuh46fle/dezinudififivo.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/jamenevezaji.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0c38c4ee7---31062324377.pdfIn PDF document text
    • http://tunapvietnam.thietbiotoviet.com/Images_upload/files/50732970090.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d056899967---47418147068.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c076e0620e7---22195444128.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/orujqsq4j0mqhhosplnsuggpcv/tigebekumafipe.pdfIn PDF document text
    • https://northstarexecutivesearch.com/wp-content/plugins/super-forms/uploads/php/files/ffdd494240a80715a3b1732e813be136/84279367148.pdfIn PDF document text
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609444007cda4---luzabugobitibu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=bahaya+narkotika+pdfPDF link annotation