Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ac9fca82cc70c4…

MALICIOUS

PDF

62.3 KB Created: 2021-09-18 17:59:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 2e3fb6dacb4c4393df40b8eb03720f7f SHA-1: b98b45a6412371629fb650613c111162ac4aff4a SHA-256: d0ac9fca82cc70c4769d86b89907c3d88b0279211c7fa33fb14b7f8aec9e4e7f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous external URIs and link farms pointing to potentially compromised websites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7146

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://crysiq.ru/uplcv?utm_term=dream+league+soccer+game PDF link annotation
    • http://adhunikjewellers.com/ckfinder/userfiles/files/68621585401.pdfIn PDF document text
    • http://htygroup.com/upload/files/jubutuguf.pdfIn PDF document text
    • http://cnmrobotics.com/files/files/wuvubudulufodofupebazes.pdfIn PDF document text
    • http://pmke.cz/pictures/files/70962259772.pdfIn PDF document text
    • https://ambient-interier.cz/files/files/52894289260.pdfIn PDF document text
    • https://777mto.org/contents/files/36566281414.pdfIn PDF document text
    • http://oodow.cn/upload/file/210905175345759060asob1rl4asgb.pdfIn PDF document text
    • http://oa30us.com/userfiles/file/47571533462.pdfIn PDF document text
    • http://www.bash.cl/media/file/xidikef.pdfIn PDF document text
    • http://jjsgreatescape.com/uploaded_files/userfiles/files/legakexulebapekat.pdfIn PDF document text
    • https://giolog.biz/images/bulk_images/files/rejutifawobovobad.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161374b5fd8f09---tukakedusodi.pdfIn PDF document text
    • http://swaptoys.org/ckeditor/uploads/files/kodivaluv.pdfIn PDF document text
    • http://tion.hu/upload/file/87522441725.pdfIn PDF document text
    • http://caudafotografia.com/userfiles/files/22541197876.pdfIn PDF document text
    • http://mimarkamilozkartal.com/userfiles/files/wugujegu.pdfIn PDF document text
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161421770614f0---fusib.pdfIn PDF document text
    • http://shahnawazonline.com/uploads/files/33499110569.pdfIn PDF document text
    • http://orderbestwings.com/uploads/files/73881696934.pdfIn PDF document text
    • https://mgrenginiai.lt/ckfinder/userfiles/files/kuwaxetu.pdfIn PDF document text
    • https://ladymamashop.com/uploads/files/202109040329316270.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16139fae155b3d---saxes.pdfIn PDF document text
    • http://hoadondientu-ptp.vn/images/ckeditor/files/27087465381.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA7F 10380 bytes
SHA-256: 07ec1207bc723e18f55bd70f55551a2b800ece160f8af701a737541878e0c8ac

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