Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a1215f28425219…

MALICIOUS

PDF

62.5 KB Created: 2021-07-28 01:41:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d3f54e535d47e2163e4e89b0341fff2c SHA-1: a428f25e2e99ee9d29adb59b6a729690bae92527 SHA-256: 67a1215f28425219f8898381b23d9ccb3d7be62d577892e2575ac8ef2b8551bb
124 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous URLs pointing to compromised websites and disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. The file's structure and the nature of the URLs indicate a tactic of using a seemingly innocuous document to redirect users to malicious destinations.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3864

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://www.tiande-global.com/ckfinder/userfiles/files/fivogajak.pdf In PDF document text
    • https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/ab908515028015789940c97a46e553fe/36078013376.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/45904686487.pdfIn PDF document text
    • http://ntouioc.ntou.edu.tw/ckfinder/userfiles/files/nokusodokafuzale.pdfIn PDF document text
    • http://inter-travel.hu/_user/file/tebokamujokomagomowu.pdfIn PDF document text
    • http://clarksville.net/wysiwygfiles/file/32876709330.pdfIn PDF document text
    • http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210728051211.pdfIn PDF document text
    • http://rinsacars.com/files/others/48501478312.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/b7b40432887d58b57e1076da415fed55/55746284165.pdfIn PDF document text
    • http://poetische-malerei.de/web/editor/files/mewetubivusinez.pdfIn PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/4b649340943d92bca104ddfec97840d4/ramevuwenuwokezefol.pdfIn PDF document text
    • http://wardwrightself.com/clients/863644/File/41301975553.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa207b45e68---47593255425.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/487d68ce7fb5b862b3299091798d0f9e/50903022916.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bed333824---gozopadasivavasevedalolol.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16095d533950ab---linofunevem.pdfIn PDF document text
    • http://logansport1971.com/clients/4/42/424235dfd0fdcd2d3cc2afd1e16bb83e/File/12536607953.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/07787db836764b67b34aab12c90c5e31/nazexisorolevigorik.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16088d0b44aa73---sonufigaso.pdfIn PDF document text
    • https://dock-levellers.com/upload/files/dodorowitosasefi.pdfIn PDF document text
    • http://juniorsmagazine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c6c77b48d---vujuwifepofu.pdfIn PDF document text
    • https://leresto-niort.fr/images/userfiles/files/51392083006.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/4a252ec42841c9d07beafde6bbb88a7a/25304982771.pdfIn PDF document text
    • https://irantruck.ir/data/file/fanux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=tom+jones+as+a+picaresque+novel+pdfPDF link annotation

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