Malicious PDF — malware analysis report

Static analysis result for SHA-256 6956786a57201c0b…

MALICIOUS

PDF

63.2 KB Created: 2021-09-07 03:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 7a2faf54ec718dffaa7a579ed152c4d7 SHA-1: 590d3760d9fa419dc35ea2c753b3619cfcca3d64 SHA-256: 6956786a57201c0b0a6eaa9e0461d678ef41a217c2d1dfa91af1c0e659381312
154 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress upload directories and disposable hosting sites, suggesting an attempt to redirect users to malicious content. The PDF's structure and embedded links are consistent with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7270

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 https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/16086bd1dc105f---25602487774.pdf In PDF document text
    • http://capital96.com/userfiles/file/mimutug.pdfIn PDF document text
    • https://licorne-hotel-restaurant.com/userfiles/file/97530350859.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/c597a5a9bf7ca017752108c6d8af5b3c/56809255490.pdfIn PDF document text
    • http://llux.vn/uploads/files/savorefiworigijaxopenub.pdfIn PDF document text
    • http://clean-ecology.com/Upload/files/suwepa.pdfIn PDF document text
    • http://asdgolfclubtoscana.com/writable/public/userfiles/file/matolojojufamugusipu.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2eb5b0d48e---99761392766.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6a71fcb48b---jogob.pdfIn PDF document text
    • http://shardamedicalstore.com/singhania/downloads/file/15682056235.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/95379698587.pdfIn PDF document text
    • https://xn--p3t29jo1ed4o4xw.tw/upload/files/nesibibibasoku.pdfIn PDF document text
    • https://mvpartners.be/images/uploadedimages/file/bixitakovokota.pdfIn PDF document text
    • http://www.peplex.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a1ee47c5d---zuxafoxefuveraloguxu.pdfIn PDF document text
    • https://mzr-avocats.com/buddha/ckfinder/userfiles/files/meperokiwolimujozijawu.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/3dbe08d56996927ba30d860feaa284a3/53904955240.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/83d46kg4lon7l20l64t17ucg1q/natamuko.pdfIn PDF document text
    • http://verduciautodemolizioni.it/userfiles/file/lukigodetukop.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db8800dc1aa---43794637977.pdfIn PDF document text
    • http://wmsone.com/eimages/file/kiluwizoxizizamotopi.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/b96036b5a63b5e291dcd63aa0dd9fbf1/xorobuwumuzijazexemi.pdfIn PDF document text
    • http://seosanhrd.com/userfiles/file/22369385890.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983f7a7284d---benofevojisorugusul.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/60217253591.pdfIn PDF document text
    • http://veiligheidsslot.nl/ckfinder/userfiles/files/maxukojakofinebupodegides.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=probability+worksheets+grade+7PDF 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_off0000deaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1