Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf31dd41a159f2c…

MALICIOUS

PDF

64.0 KB Created: 2021-07-07 13:04:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0349582ff2bf537993ea986806563a97 SHA-1: f14ee5d2fce1a3f3f655e6e27a13947146b66b92 SHA-256: 1cf31dd41a159f2ce0392156d8b29749830fbba28c6f06d96d18fe58ddb1613d
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is often used to redirect users to malicious websites. The heuristics indicate the document functions as a link farm, pointing to numerous compromised WordPress upload storage locations and disposable hosting sites. The ClamAV detection confirms its malicious nature, identifying it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://garglob.ru/uplcv?utm_term=like+the+windmills+of+your+mind PDF link annotation
    • http://security-m.jp/tool/images/file/bepimadagosowudogulezesa.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160787e89513c5---simiforumororomeg.pdfIn PDF document text
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/160757bab9ae47---10922134013.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/baa11aafeecbcfb0366e00fc1a11d7d9/bidaniguromovomabike.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/4a61jgd6l7mtud0u4kegjrbeg4/66290487172.pdfIn PDF document text
    • http://centralgiving.com/media/userfiles/file/xirupurenusuzotamogoji.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/760e7691800d59ea1c5014731e300d02/23235698800.pdfIn PDF document text
    • http://shiinamotors.com/js/upload/files/91738245110.pdfIn PDF document text
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/5c7059bc6bf699cee4e6180622dff88c/45554563218.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/97446130501.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/553h66gn6vt0j2u65gs00gsbo1/69829101761.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a810fb0ed0f---vumof.pdfIn PDF document text
    • http://oilmachineydy.com/d/files/bizig.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160adfd7e6a3a3---wenepon.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160896d4d74bea---lexidefuramivesuxabukapu.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608fc97693da1---zakatemu.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d8def76a319---57021183419.pdfIn PDF document text
    • https://edu-mate.kr/_UploadFile/Images/file/342101390.pdfIn PDF document text
    • http://hzjksj.com/images/upload/File/zeruwoweratem.pdfIn PDF document text
    • http://aep-tc.com/cache/fck_files/file/91078856118.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/7c8168bb9d2cdd21035818eb6706e267/dunebapibuwajafiraret.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/rqnmv8fp97aptk3ccq7l8epmb2/95298610060.pdfIn PDF document text
    • http://yogo110.com/userfiles/file/faxalirewabafilibosu.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/eb2b3d33a4a09e6e7fd91bc4786828d2/doxilomalasaku.pdfIn PDF document text

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