Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b07ccb48739863d…

MALICIOUS

PDF

67.8 KB Created: 2021-07-21 03:53:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 28fef2ca754ee1d05052ece2070a57b9 SHA-1: bd3b7265fcc9de2976ff96d4eb25de14a19ef393 SHA-256: 6b07ccb48739863dc93905e092006ba51eb330acd12ebff7f4cca8435e8fd505
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected by ClamAV as Pdf.Phishing.Trojan and ML classifiers flagged it as malicious. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5526

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://www.orhancoskun.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081c4f3ea984---zuzaxodatufiburonugavem.pdf In PDF document text
    • http://shinies.ru/img/lib/file/2335108476.pdfIn PDF document text
    • http://finemetal-cn.com/upload/files/95021260911.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a437ddd955d---tegedi.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/3584ec7ba0f1e33143cda6d280a6d724/38371540194.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/6gf07l1b6unqsgak0dig531a24/53485558180.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/16073c7910148a---41851890342.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0299acc02---lusepodapupera.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/ab96affb2c073247fd1b8f87ad3913f0/24821456844.pdfIn PDF document text
    • http://www.odnpoznan.pl/fotki/file/file/kaxevipanili.pdfIn PDF document text
    • https://acgroupenterprise.com/userfiles/file/gevoxepetizufinuwo.pdfIn PDF document text
    • http://buddhavehicle.com/userfiles/file/suboxixujevof.pdfIn PDF document text
    • http://yournamebadges.com/withyourdog/cms_uploads/file/jokazodoxuzes.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5e46c23d0---88026158093.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/bozajixitawasovuxapuro.pdfIn PDF document text
    • http://studiopignotti.it/userfiles/files/84307017723.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/09cea9d83562b9ea9757abd0a48b727d/vegazas.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607294d453409---87047698486.pdfIn PDF document text
    • http://kleiberit.ru/files/file/24108208771.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160708f3c785f4---mafutipiraxosidunibil.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/f8fc0otsimghuke7upbirvsq3a/34690441876.pdfIn PDF document text
    • https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/5qdvp3nfl32v0cactu94oc3o09/texakuforuj.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609905d22a7a9---bukogaligevatix.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=win+cannot+be+installed+to+this+diskPDF link annotation

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