Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8da2a654266fb02…

MALICIOUS

PDF

54.4 KB Created: 2021-08-02 08:40:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: bcd5a947f8d8c59d1300a6de6052eff0 SHA-1: 225efd75e759e0eeeb396b015ac9263538ffdc83 SHA-256: c8da2a654266fb0290c601a728a0442b254c3d5710c5c3d0b65bb146df5760a5
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 or disposable domains, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body is heavily obfuscated and appears to be non-readable content, further supporting the idea that the primary function is to host malicious links rather than convey information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9690

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 http://xn--xhq021fvrwdth.com/d/files/lexopazezoruxodugulurez.pdf In PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0a22a4493---29423532428.pdfIn PDF document text
    • http://cdmvt.cz/sites/default/files/29292726857.pdfIn PDF document text
    • https://repare-ton-smartphone.com/userfiles/file/liroduwomik.pdfIn PDF document text
    • https://www.grdr.org/paidel/ckfinder/userfiles/files/pabarate.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/bolekugor.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c6dfc056938---norojabuj.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160f1f045cb3a1---44849017222.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/evefo5fn9bmtncq5jm7et801v5/12919794677.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160add671132e0---vivemapovepexurapijifasad.pdfIn PDF document text
    • http://jiendurancecoaching.com/ckfinder/userfiles/files/nawugiwagubejefirutideja.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1cbb01b340---62507614810.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=caracter%C3%ADsticas+y+funciones+de+los+organelos+celulares+pdfPDF link annotation

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