Malicious PDF — malware analysis report

Static analysis result for SHA-256 df599470e2ca963b…

MALICIOUS

PDF

58.4 KB Created: 2021-09-11 00:52:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ed4de53f54c39133b2fd0deedae475b8 SHA-1: a911094ef3c672b8aa8e2f4c675efa79bec07cf7 SHA-256: df599470e2ca963bec8f83e4705f19fc8ae5101817a58c19f1f0f3505240b3ba
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs that point to other PDF files hosted on various domains, suggesting a link farm designed to distribute malware. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically identifies the PDF as a link farm on disposable hosting, reinforcing the phishing or malware distribution motive.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6837

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://hondasushi.com/uploads/files/51792468088.pdf In PDF document text
    • https://mimpishiodua.com/contents/files/lajerinifunukaniw.pdfIn PDF document text
    • https://energiadirect.pl/application/resources/ckfinder/userfiles/files/81669978561.pdfIn PDF document text
    • http://vssteel1999.com/ckeditor/userfiles/files/dobipusezuziseb.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1612eb5b9ebd7f---59858409999.pdfIn PDF document text
    • https://bouveau-consulting.com/userfiles/file/tisomelesibapi.pdfIn PDF document text
    • http://locnuocvietmy.com/Images_upload/files/87795424433.pdfIn PDF document text
    • https://bisleriwheel.genefied.co/ckfinder/userfiles/files/7881674836.pdfIn PDF document text
    • http://35ju.21tg.cn/uploadfile/ckeditor/files/79884232749.pdfIn PDF document text
    • http://strandedtattoo.net/file/kusapediligaxi.pdfIn PDF document text
    • http://vvk-wiedermann.at/userfiles/file/44620804295.pdfIn PDF document text
    • http://ambvetbrashersclavoghisu.eu/userfiles/files/kofugurodagawupazozusegoz.pdfIn PDF document text
    • http://mxag.com/upload/browse/file/12745221069.pdfIn PDF document text
    • http://biswasi.com/userfiles/files/xuvemoxako.pdfIn PDF document text
    • http://bidmitt.com/img/files/file/jelam.pdfIn PDF document text
    • https://oreopay58.com/ckfinder/userfiles/files/55940753621.pdfIn PDF document text
    • http://xn--80ahcjevtqq.xn--p1ai/ckfinder/userfiles/files/jiragopomebamer.pdfIn PDF document text
    • http://jlicentral.com/images/authors/file/dusuluxazobut.pdfIn PDF document text
    • http://tuzvedo.hu/elemek/file/bojurijurowutumadas.pdfIn PDF document text
    • https://guineaservicesproviders.com/gsp/files/sibiwebejakibofu.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/vixujofugulawewusa.pdfIn PDF document text
    • http://mobiliteit.nu/files/xurerulul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=the+lean+startup+book+free+pdf+downloadPDF link annotation

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