Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f6cff71a1c09139…

MALICIOUS

PDF

69.4 KB Created: 2021-09-10 16:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-27
MD5: 97d989b0b44576e92e4f0253908eeb74 SHA-1: 058dae4793832a0e0c32b203fcab60b4a1d95212 SHA-256: 2f6cff71a1c0913927a46de40456b40b9f52d29ea8975051aaff148d3a5fd12e
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to various websites, including those hosted on compromised CMS platforms. The presence of these links suggests an attempt to redirect users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6865

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://www.hz-kontejnery.cz/ckfinder/userfiles/files/29241218053.pdf In PDF document text
    • http://vetportonaccio.it/userfiles/files/niragafasu.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/xanuwalutoruziputetenub.pdfIn PDF document text
    • http://lisaarkinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/51493058959.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613579ecf3686---fadesuvetite.pdfIn PDF document text
    • https://reazfarah.com/ckfinder/userfiles/files/foperezimoxut.pdfIn PDF document text
    • https://nocnepal.org.np/ckfinder/userfiles/files/18157751410.pdfIn PDF document text
    • https://suncables.co/images/file/71916314914.pdfIn PDF document text
    • https://venus-forever.com/image/files/87126541977.pdfIn PDF document text
    • http://qiangka.com/ckfinder/userfiles/files/49615521490.pdfIn PDF document text
    • http://shijijiaming.net/filespath/files/20210907145809.pdfIn PDF document text
    • https://www.ijdsir.com/ckfinder/userfiles/files/50975801531.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a70027e90f---dimigugukuferoretek.pdfIn PDF document text
    • http://www.jokilaaksonratsastajat.fi/file/96948941295.pdfIn PDF document text
    • http://rotang.net/userfiles/file/25647029495.pdfIn PDF document text
    • http://cosmikkino.ru/sadm_files/dawefagasunejaxirijomez.pdfIn PDF document text
    • https://robindayne.com/ckfinder/userfiles/files/25405176308.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/161325da9279aa---63785141587.pdfIn PDF document text
    • http://dpnovelty.com/upload/files/81337799155.pdfIn PDF document text
    • http://divyabodhanam.org/userfiles/file/gisagirarijikukizu.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/aec3b756003968b8ce3722c5a6cb18c6/24539163052.pdfIn PDF document text
    • http://jpind.pl/userfiles/file/75179953432.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/r075jb282rqi8l2927os6ddjv7/kinipub.pdfIn PDF document text
    • http://santamariamikado.com/uploads/files/ramafesukekefi.pdfIn PDF document text
    • https://groupunsur3.com/contents/files/dimifexudukuja.pdfIn PDF document text
    • http://perilatomsk.ru/ckfinder/userfiles/files/4606052994.pdfIn PDF document text
    • https://marljivo.hr/userfiles/file/muronunepoxiwudi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=how+to+open+srt+file+on+androidPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC92 17860 bytes
SHA-256: 0480b2ef533beb554aefb974558e2710cb115dd80705d683a7d423752f7d9219

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