Malicious PDF — malware analysis report

Static analysis result for SHA-256 352abea7efd83317…

MALICIOUS

PDF

78.1 KB Created: 2021-09-03 13:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 17797f866fc119417d0e0bf6f78cb99e SHA-1: 8afc607f1e5635698ed3dee0de2750bc7d6a2a81 SHA-256: 352abea7efd833175a522eb184efa316233a9ad6767c4bf19800b67bd0b68bdd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5568

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://allytemp.ru/uplcv?utm_term=bacterial+cell+wall+pdf+download PDF link annotation
    • http://mylivediamondinventory.com/uploads/files/41573828500.pdfIn PDF document text
    • http://18554080.com/userfiles/file/78155698270.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1610100f1324df---44440421133.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/87b933bdef4dfb856cbdb4a1180ba512/pijuxevisezuwemurepapiga.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/dagogeriju.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/1d6677aac5d6eb6e7b36c624eee46617/detazegukivilu.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0b10edfe0e6fe27546fe25286952b4f3/18989671470.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/cmvn8reqphfmubsgur58a0r2g1/lexogunexapenup.pdfIn PDF document text
    • http://autovoda.ru/upload/files/5282880585.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/xipofojimizonoboguw.pdfIn PDF document text
    • http://plymouth-logs.co.uk/ckfinder/userfiles/files/44172822025.pdfIn PDF document text
    • http://neurooperations.com/ckfinder/userfiles/files/90488166892.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fe6bc0c6b6---8600935068.pdfIn PDF document text
    • http://sladkiy-ostrov.ru/userfiles/files/petojusa.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab007627965---gasaxanapovug.pdfIn PDF document text
    • https://ou-ravda.com/ckfinder/userfiles/files/tebogixolowajig.pdfIn PDF document text
    • https://tedvandergulik.nl/userimages/file/kupomazibigemado.pdfIn PDF document text
    • https://hoangphatdanang.com/uploads/image/files/5145088171.pdfIn PDF document text
    • http://kirilmazbardak.com/userfiles/file/45330975397.pdfIn PDF document text
    • https://voziky-paletove.cz/mctree.cz/pictures/other/files/19698647768.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/92578ca8ef68582fde18c2e9cfb62844/5740643890.pdfIn PDF document text
    • http://acquadiqualita.it/ckfinder/userfiles/files/35003407744.pdfIn PDF document text
    • http://americasbestwingsbeltsville.com/uploads/files/75320894150.pdfIn PDF document text
    • https://feng-shuiworld.com/userfiles/file/mumifonekoludegedifusu.pdfIn PDF document text
    • http://thomasgearon.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dewapomedegoxamikaxage.pdfIn PDF document text