Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2e9d0926792492…

MALICIOUS

PDF

78.9 KB Created: 2021-09-04 19:16:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2ee4d1098f11846d766e7ab09c2d0033 SHA-1: c910e970f1e4efd788d8552f09065236eaa02cb8 SHA-256: 9e2e9d0926792492b52c839beb2f5f67fe1490df187942ea191e844a8b364d2b
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is identified as a malicious PDF by ClamAV, indicating it's likely a phishing or trojan delivery mechanism. It contains numerous links, many pointing to compromised CMS upload directories, suggesting a link farm used to distribute malicious files or redirect users to phishing sites. The presence of embedded URLs and the PDF structure strongly suggest an attempt to exploit users through deceptive content, likely as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3499

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://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609cd56556c3a---jiwoxugadusom.pdf In PDF document text
    • http://aimic.com/userfiles/file/favafasidi.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/lomofavasolaluga.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/87fa771dc8d4c8b7cdc373f93afeee61/62959544605.pdfIn PDF document text
    • https://supportsystemsvainc.com/home/ssvi/public_html/ckfinder/userfiles/files/54153494584.pdfIn PDF document text
    • https://intelean.com/wp-content/plugins/formcraft/file-upload/server/content/files/160929134f0ade---sujuxabo.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/jefuxobojijupabilipitolo.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089f9528dfeb---30161358614.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/fa395b7d40502691d652039ac7b99741/60573286297.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b50f59cc903---bedumorukezeboti.pdfIn PDF document text
    • http://jogamiskolc.hu/ckfinder/userfiles/files/subazufezelamagokezojeju.pdfIn PDF document text
    • https://bacninhonline.com/webroot/img/files/13826491946.pdfIn PDF document text
    • http://rauvuonsach.com/images/uploads/files/83720164347.pdfIn PDF document text
    • http://solsethreunion.com/clients/f/f5/f56c6d7ba488b74ef40bd02d3fc4d0b2/File/30809170591.pdfIn PDF document text
    • http://hanilkwanla.com/uploads/files/19969852816.pdfIn PDF document text
    • http://planet-for-events.de/userfiles/file/tewuga.pdfIn PDF document text
    • http://hosungtour.net/FileData/ckfinder/files/20210618_2436F8FD3D319DD2.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e9a350874---dipaxasusulisaxuxi.pdfIn PDF document text
    • https://sambelteri.com/contents//files/26527273366.pdfIn PDF document text
    • https://www.harnoordesigns.com/wp-content/plugins/super-forms/uploads/php/files/3nvibo2tggifa64vjvm7457c63/fuxer.pdfIn PDF document text
    • http://www.sphotobooth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f9f983c84---13190931456.pdfIn PDF document text
    • http://www.gamylai.vn/uploads/files/19875453986.pdfIn PDF document text
    • https://opsclown.it/ckfinder/userfiles/files/76830943573.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=iron+man+mask+template+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D0 10612 bytes
SHA-256: 6cc3bb90fb383656f4eda38c4ab817b76dd9cc8748867e21637639e9802502fd
font_01_sfnt_off00010a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A11 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1