Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b1375d8519a203…

MALICIOUS

PDF

59.1 KB Created: 2021-09-01 17:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: f7b1bebb960bb363013b72fc4f1231b5 SHA-1: d60e2fdd18c81e5130f9dbab6041962ae71cb302 SHA-256: b6b1375d8519a203517cbb3b5a1a6056decdfa3e2b75526f706d05fb372f9907
154 Risk Score

Malware Insights

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

This PDF file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It contains numerous links, many pointing to compromised websites or disposable hosting, suggesting it functions as a link farm. The embedded URLs are likely intended to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9654

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 http://kubak-ubezpieczenia.pl/userfiles/file/29780189954.pdf In PDF document text
    • http://alhouti.com/userfiles/file/53995151407.pdfIn PDF document text
    • https://ietc-oman.com/userfiles/files/bapawolipuxiguwofaruz.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/c5edb91f7dff3c91b411300ccc922770/fojivolapa.pdfIn PDF document text
    • http://waukeganeast1980.com/clients/877304/File/nefodelemekekuwoviwileka.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f9a8c02485---sakaverelo.pdfIn PDF document text
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/a400f623435a8f875014924f43a9dc30/vatoneduputarakom.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/ab58851ab17fe90e9d8220a7b678cb95/18300650326.pdfIn PDF document text
    • https://vieclamlaocai.vn/webroot/img/files/7958157473.pdfIn PDF document text
    • http://blekinge.boj.se/uploads/userfiles/files/zobaruxibewamifujik.pdfIn PDF document text
    • http://aodaibooking.com/FileData/ckfinder/files/20210620_EBF14E27B6CE1A92.pdfIn PDF document text
    • https://hotelmitrutarija.com/uploaded/files/82196729034.pdfIn PDF document text
    • http://cedule-plachty.cz/files/file/25008542033.pdfIn PDF document text
    • http://tce.vn/imagesflashupload/file/wepikokawaxe.pdfIn PDF document text
    • http://wwsm-us.com/files/file/texusurume.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d962db2e7---senox.pdfIn PDF document text
    • https://romalasergroup.com/userfiles/files/wutevagebutukutefakabi.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3077708f4---44376149271.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e5870a1961f---1243970272.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/18c4f7b457728ccd395ee56bbd476b6d/wufejaban.pdfIn PDF document text
    • https://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/zizokoki.pdfIn PDF document text
    • https://afd.me.uk/wp-content/plugins/super-forms/uploads/php/files/na3phddcfct3lbav5nsginmjhe/gagonajomumiwilelijix.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/523c3f02ec6a00f3e5501f9a5e2e669d/5818799373.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160c60d262ff1a---juviso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=2021+passover+datePDF link annotation

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