Malicious PDF — malware analysis report

Static analysis result for SHA-256 92d1193c5404e794…

MALICIOUS

PDF

64.0 KB Created: 2021-09-11 12:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 60eb17dd4149a38e47356fb55f104a2e SHA-1: 5cb91d829c0967e28d2c31b8efbf5535383069e9 SHA-256: 92d1193c5404e794162ad169579e0af9d55994f3459290451a555c0f9fbed09b
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to potentially malicious domains or are part of a link farm designed to obscure the final destination. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7605

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.juniorcollege.cl/ckfinder/userfiles/files/rogopikolakodabowonamo.pdf In PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/2e7i4jnb6m7lthirg23tetrup5/betuzakaforerofaxelixavu.pdfIn PDF document text
    • http://h-p-n.fr/catalogue_dynamique/file/wumuzo.pdfIn PDF document text
    • http://www.s-prom.si/fileupload/file/zuzenelufotidikav.pdfIn PDF document text
    • http://exosushi.com/uploads/files/78844820602.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/44198914791.pdfIn PDF document text
    • http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///jinodarug.pdfIn PDF document text
    • https://lexconsulting.ro/webroot/files/media/gofemedikekapukekibagubu.pdfIn PDF document text
    • http://baloneacessorios.com/_upload/file///lobodulikesi.pdfIn PDF document text
    • http://dh-cell.net/ckfinder/userfiles/files/volosadajixufolafofufug.pdfIn PDF document text
    • http://oris-am.com/editor_up/wejekoredujosogisepuji.pdfIn PDF document text
    • http://dr-onesrl.com/userfiles/files/gakimizanililulapan.pdfIn PDF document text
    • http://www.majbrno.cz/uploads/files/zukaxow.pdfIn PDF document text
    • http://csc0731.com/userfiles/file/20210910070353_c2iy2g.pdfIn PDF document text
    • http://ckud.handysociality.com/upload/files/57245716443.pdfIn PDF document text
    • https://8cj2aja7-8mxb.com/contents/files/jopezenewo.pdfIn PDF document text
    • https://dom4m.com/userfiles/files/mapafajirifejoroliwi.pdfIn PDF document text
    • https://doanhnghiepvietnam.org/img_duhoc/files/19405589559.pdfIn PDF document text
    • http://ztracenaexistence.cz/files/content/file/7899190507.pdfIn PDF document text
    • https://episcopiaoradiei.ro/files/nixorokixelazugefozona.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613186cc4af64---12010022313.pdfIn PDF document text
    • http://firmen-bekleidung.at/userfiles/file/xivox.pdfIn PDF document text
    • https://jogamiskolc.hu/ckfinder/userfiles/files/15113374429.pdfIn PDF document text
    • http://liweisteel.co.th/ckfinder/userfiles/files/dujugowogezujivefeximel.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=handphone+selfie+terbaik+2020PDF link annotation
    • 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_off0000e890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE890 11060 bytes
SHA-256: 40ba948c20fde5d42ef355b0b415a38f6a775101fcdc7fbfa31531d041231e16

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