Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f3f8de76b972209…

MALICIOUS

PDF

47.6 KB Created: 2021-09-06 21:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a92ba3a23abce86d47c81bfd0a253348 SHA-1: ff21e79d15c61157835cad0d12ded3215dfac345 SHA-256: 9f3f8de76b972209c9e6cc97034e822ad2026c57b38353699fb3a21ae2ccdf8b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6210

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://aliglobshop.com/userfiles/file/10244233864.pdf In PDF document text
    • https://pamukoglu.com/userfiles/file/goduxenit.pdfIn PDF document text
    • https://daaeportrett.no/upload/file/rumudomebibupi.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/86aa40322ab95b75d6fb3b42db3a6683/95788025371.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/32be8de11c432890d5bed2a587e89dcb/jabagedabuwofibo.pdfIn PDF document text
    • http://4seasonstours.in/userfiles/file/9326068435.pdfIn PDF document text
    • http://spamsmsgiare.com/media/ftp/file/146342157.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6eba33129---fowopodopikiwedixop.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c30c01db615---toronugojuwexa.pdfIn PDF document text
    • http://haliburtonhighlandsheritage.ca/userfiles/file/sonujifoxudafa.pdfIn PDF document text
    • http://humidorio.de/ckfinder/userfiles/files/60514531307.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/lakowakoxujazavewagexewo.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16103ec7713001---gufasevivekifin.pdfIn PDF document text
    • http://frangarcia.eu/upload/file/vorutika.pdfIn PDF document text
    • http://wpklaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/97876276617.pdfIn PDF document text
    • http://av72-reklama.ru/userfiles/file/16271918321386dc386d8124ebcba1.pdfIn PDF document text
    • http://biomedia.asia/upload/ckimage/files/11271966789.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/94618867231.pdfIn PDF document text
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/160796fb1738ec---xepifutovufu.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/161067984208ba---jogirerivedobuvejineleja.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4644e9c7b---82158083373.pdfIn PDF document text
    • http://dailymaydemtien.com/userfiles/files/61516951230.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/7219160236.pdfIn PDF document text
    • http://hollandunitedreunion.com/clients/5/52/52f3fdf721cdccceb566e47094f1d9de/File/fewelibetidelenizod.pdfIn PDF document text
    • http://imssp.by/data/images/fxeditor/file/66992087768.pdfIn PDF document text
    • https://nolimitscenter.be/peausitive/images/FCKeditor/file/kaxosesupubusagenabelakex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=difusi+dan+osmosis+jurnal+pdfPDF link annotation

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