Malicious PDF — malware analysis report

Static analysis result for SHA-256 24f0cdc9c60f022c…

MALICIOUS

PDF

57.0 KB Created: 2021-07-05 21:56:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 6818a753b2c1ea3a4de6459a585ac6ba SHA-1: a93e80ef272b98800a23db38d2468a2a0a057c48 SHA-256: 24f0cdc9c60f022c80ce71b5f1f79468fdb9e0b513e267aa0da46e4a3b850530
154 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The presence of multiple external URIs and link farm heuristics strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5388

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/c90999753829e5ac24360b9eca1d17d8/12644727931.pdf In PDF document text
    • https://emmaushuis.org/pages/27161813144.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/5u5o4eqdp0jnslo4pprdpid7iq/97657140639.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607ee8b6a5260---wexizamitodukuledaj.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/bktpfqm0gqmgn7t32o9u2qs2kl/wovokovok.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/f25cfebdba34976d22320f75d2cd82a7/wixidojotebotimutakuzew.pdfIn PDF document text
    • http://kajsanordstrom.com/userfiles/files/52245974366.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/nd7pf7h9heshun7sgnqhc1jten/17625363111.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/0f921917323ca96d76812a66670043c8/91016179700.pdfIn PDF document text
    • http://thietbixanh.net/uploads/files/15594548251.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/122411282791a29bc3294bc989ff3bb5/jabag.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/e7bea7bfb1f3bc775ba0fa7807243b1e/ketewiwinikewuvemifaz.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/1b8ce4394622a6e09bcab50538dcda1d/85927084324.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/022ed6f1c2dc53ae774c85abbac505f2/bafufobo.pdfIn PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/b607d98541ff48d7df8065474e259eef/tosesalikalox.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b61c4d66ca9---xopiwo.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076ada52d3d4---4299448685.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2a5361424e---34546162311.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c7b32a366e5---31755808835.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5db88b0cc---29935149806.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/1a9d6e9f15f6dbae183a87b17708110a/turizizinajiteto.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/c7d03c208215a89afe86d2363cc1f868/risunikusujozogiviligoxo.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/a1lmhn0g4vekc9u4u1pejk2c98/wudulex.pdfIn PDF document text
    • http://gd-weimi.com/upfolder/e/files/20210609235019.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=guide+to+safe+scouting+age+appropriate+guidelinesPDF link annotation

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