Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62ca33bcbebf2ba…

MALICIOUS

PDF

64.0 KB Created: 2021-09-16 21:18:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 0a9a5ff8e3e0ebc91d59812eca6bebf1 SHA-1: af62726ec2bc1d42345197c3dab8a9ca4c4c78af SHA-256: b62ca33bcbebf2bae25700f302963aaa5f1f1374c16033798b820fe82d7a6b7c
94 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV. Static analysis reveals it functions as a link farm, containing numerous links to external PDF files hosted on various domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high number of distinct hosts and a pattern suggestive of SEO manipulation or phishing lures. The presence of many unknown reputation URLs supports this assessment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4686

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://e-hematologica.pl/users/file/34810598086.pdf In PDF document text
    • https://alhurwallpaper.com/Files/files/58744567357.pdfIn PDF document text
    • http://missteenqueenuk.com/userfiles/file/bezuku.pdfIn PDF document text
    • http://noithatlekhanh.com/Images_upload/files/kikoneleniwiban.pdfIn PDF document text
    • https://nomortiga.com/contents/files/40947217013.pdfIn PDF document text
    • http://studiobardinisrl.com/userfiles/files/88288183666.pdfIn PDF document text
    • http://zaintik.org/files/galeria/files/97599661804.pdfIn PDF document text
    • http://yas-center.ru/userfiles/file/wojesusolutevenanages.pdfIn PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/99960373530.pdfIn PDF document text
    • https://biserica-izvorul-tamaduirii.ro/files/36303438678.pdfIn PDF document text
    • http://garmaclima.com/uploads/ckfinder/files/baraxejivudatav.pdfIn PDF document text
    • http://studioingegneriavaragnolo.com/userfiles/files/pipezelokojalun.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/kiwatafazuxibadov.pdfIn PDF document text
    • http://tzsunup.com/upload/69682369606.pdfIn PDF document text
    • http://zkmeiqi.com/admin/ckfinder/upfile/files/98518263573.pdfIn PDF document text
    • http://brcassociati.com/userfiles/files/70788330367.pdfIn PDF document text
    • http://flywings.sk/UserFiles/file/25876829078.pdfIn PDF document text
    • https://xn--z4qq44i.tw/upload/actfiles/kikixa.pdfIn PDF document text
    • http://tonyprins.nl/images/uploads/file/rosixuduzaku.pdfIn PDF document text
    • https://12shio3.com/contents/files/lupibakamogiwitulisojase.pdfIn PDF document text
    • http://abwingscolley.com/uploads/files/nesusifix.pdfIn PDF document text
    • http://hyundaiokla.com/uploads/files/84525889098.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/1ea4328f9a6f18e6895f01f6d43885c4/mefoz.pdfIn PDF document text
    • http://hzbaoyan.com/images/upload/File/55341679406.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140c92d9477d---vimujavek.pdfIn PDF document text
    • http://yuh-tarng.com/userfiles/file/68769147921.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=watch+the+boss+melissa+mccarthy+onlinePDF link annotation