Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5ab42afa7dede3…

MALICIOUS

PDF

47.0 KB Created: 2021-09-04 04:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a4e7640c1da6209767e51704f63c6bf1 SHA-1: 915168c46b68384881e70149864e4a036726dd63 SHA-256: 5c5ab42afa7dede3fa590328c7c76f5018656ff208593d5497343db05bbe39dc
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to host or redirect to malicious content. ClamAV detected this as a phishing trojan, and ML classifiers also flagged it as malicious. The presence of these links indicates an attempt to lure users to external, potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9202

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://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/e054d2a694e2406e31fe361378f93681/34415317942.pdf In PDF document text
    • http://ingatlantv.tv/userfiles/files/41808998477.pdfIn PDF document text
    • https://barcelonacentromedico.es/files/galeria/files/68479943552.pdfIn PDF document text
    • https://aspit.ro/imagini_ws/laliw.pdfIn PDF document text
    • https://akproauto.net/nbloom/fckuploads/file/48655022624.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/zojujuki.pdfIn PDF document text
    • http://king-pro.com/userfiles/files/52521808079.pdfIn PDF document text
    • http://barrospizzadb.com/uploads/files/mururosanakuwobumewab.pdfIn PDF document text
    • http://zhfangyuan.com/uploadfiles/files/wivefonowixumurakixebanid.pdfIn PDF document text
    • https://www.winsum.frl/ckfinder/userfiles/files/sekananuravilumuf.pdfIn PDF document text
    • https://cedria.es/DOCUMENTS/FotosFCKEditor/file/72757958000.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/c188abe44bb75d5a5b8f9498b30843e8/61889992424.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16077facb03610---73576909019.pdfIn PDF document text
    • https://tucarrorentacar.co/ckfinder/userfiles/files/15876664752.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d89291a0c3---72295000696.pdfIn PDF document text
    • https://renewone.de/files/84283007889.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/1281db7b63b113bdfa9aed3b57cfb65f/92663956602.pdfIn PDF document text
    • https://cecprint.com/images/file/jazesigobaxa.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b87d042419---tubezizoseforo.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b5756fc92ea---1561608030.pdfIn PDF document text
    • http://clubselectionvoyages.com/images/file/93702990350.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d8947817cb---43074297556.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=whatsapp+emojis+and+their+meaning+pdfPDF link annotation

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