Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb3d3fa68b55586…

MALICIOUS

PDF

58.9 KB Created: 2021-09-19 02:10:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c2844eb01ac98bbe3b86dc37a095aadc SHA-1: 078770a0931d82ded289da7074ebc249b80feec8 SHA-256: aeb3d3fa68b55586993c6e71d3e3b9027b7dd2add1662f165f31713d37bb680b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to various websites, including those hosted on compromised CMS platforms. This pattern is commonly used for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7684

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=top+random+video+chat
    • http://ueros.fr/admin/ckfinder/userfiles/files/57751595083.pdf
    • http://circuitvietnamcambodge.com/hinhanh/file/22865095215.pdf
    • https://srsatta.com/ckfinder/userfiles/files/rakogatefabine.pdf
    • http://dental-forum.ru/userfiles/file/94309557280.pdf
    • https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd45b012dd---26201769699.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613579f4d81d9---99499602526.pdf
    • http://zamaro.cz/images/fcke_files/file/88581993664.pdf
    • http://songhandiban.com/uploadfile/file/2021091514021473499.pdf
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135e9ef19e59---97447402481.pdf
    • http://dabaizhongxue.com/upload_fck/file/2021-9-1/20210901232323428620.pdf
    • http://vertracapital.com/uploads/files/10836670570.pdf
    • http://hotelalbicia.com/userfiles/file/20384350829.pdf
    • http://jindi2010.com/uploadfile/files/bogajewesujututibudixu.pdf
    • http://f-kcc.jp/user_data/userfiles/files/taxinojurazipokipotelab.pdf
    • http://eko-gospodarstwo.eu/files/file/vamefigo.pdf
    • http://saimiri.name/upload/file/41588183061.pdf
    • http://almar-bus.pl/userfiles/file/tunuwowefi.pdf
    • http://clubselectionvoyages.com/images/file/85301469237.pdf
    • http://sirindhorn.net/upload/File/zuneradetiwaxokixujurus.pdf
    • http://shukokai-voves.fr/userfiles/file/4359782305.pdf
    • https://thuanxuongmonmb.com/admin/webroot/upload/image/files/97394915855.pdf
    • http://groupementpecheduloir.com/ckfinder/userfiles/files/datikodilesawa.pdf
    • http://morard-mcf.fr/data/Files/kowebewixatofagifapodase.pdf
    • https://anfauglir.com/images/file/69955918564.pdf
    • http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/19307213512.pdf

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