Malicious PDF — malware analysis report

Static analysis result for SHA-256 d414d39d02277d81…

MALICIOUS

PDF

61.2 KB Created: 2021-09-12 18:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 98395e56d59f3255d87613f4b035153b SHA-1: 5913747004e53e4e84298fb01245d75a26fdb5fa SHA-256: d414d39d02277d8101b83e3b584363b05dc5742633e427a344df24f515965304
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting, indicating it functions as a link farm. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. The document body is heavily obfuscated and unreadable, but the heuristic firings clearly indicate the document's purpose is to redirect users to malicious or compromised external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://badaranquehablar.com/userfiles/files/35547102220.pdf In PDF document text
    • http://perfect-gallery.com/userfiles/file/daluzunojifowodexomufezok.pdfIn PDF document text
    • https://bistro-8.com/wp-content/plugins/super-forms/uploads/php/files/a4e001238fc102273cbdbd316452eade/41250035765.pdfIn PDF document text
    • http://twsl.mingann.info/upload/ckfinder_temp/files/20210904171337.pdfIn PDF document text
    • https://www.paseppe.gr/ckfinder/userfiles/files/66150524641.pdfIn PDF document text
    • http://lso-msm.com/userfiles/file/44776036053.pdfIn PDF document text
    • http://0048.pl/48files/file/14354214117.pdfIn PDF document text
    • http://star-transform-moscow.ru/uimg/files/raradolatosoge.pdfIn PDF document text
    • http://solis.altrodesign.eu/ckfinder/userfiles/files/saxabirajinakizowir.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613c270040b52---xakejogulidoxari.pdfIn PDF document text
    • http://hondasushi.com/uploads/files/bewefumuzaj.pdfIn PDF document text
    • https://www.wroclawmodelshow.pl/ckfinder/userfiles/files/29662054813.pdfIn PDF document text
    • http://yarpb.ru/pic/userfile/61849170286.pdfIn PDF document text
    • https://easypayindia.in/userfiles/file/malipubul.pdfIn PDF document text
    • http://greentreeprep.com/cote_dor_import/admin/ckfinder/userfiles/files/kubozofaxejilobisososibu.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7aa5b9f96---givove.pdfIn PDF document text
    • https://nergizleryapi.com/image/files/99531021755.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d5afb55c6d---kuwujezanepebunorusozitef.pdfIn PDF document text
    • http://sungder.com/upload/14026430352.pdfIn PDF document text
    • http://frankslawfirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/29368914393.pdfIn PDF document text
    • http://career-id.org/ckfinder/userfiles/files/5767124836.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133b08ed3ce8---40609471897.pdfIn PDF document text
    • http://sinoscaform.com/upload/ckimg/files/202109081116049467.pdfIn PDF document text
    • https://honkakuji.jp/honkakuji/images/ckfinder/files/mumiwonoxisomojego.pdfIn PDF document text
    • http://w-mill.jp/images/file/kexapovisuk.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=android+tally+appPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.