Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed715c1ac62d014…

MALICIOUS

PDF

53.0 KB Created: 2021-09-07 20:31:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 1cfd5dd4279534bf93dcef1d94a3b7cf SHA-1: 280c659ba82dfd22126c1425fcf2123916c949c5 SHA-256: 5ed715c1ac62d01498561742620715f0a68e38a3d6bb65f78919b12c7fbdd995
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites, indicating a link farm or redirection strategy. ClamAV detected this file as 'Pdf.Phishing.Trojan', and ML classifiers also flagged it as malicious. The presence of embedded URLs and the nature of the heuristics suggest the PDF is intended to direct users to malicious content, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6443

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://arlingtonhigh1961.com/clients/e/ef/ef36f0800c0a5d5a0b00d5ecc8c3c6da/File/89030655536.pdf In PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c85276b9c1b---48238675383.pdfIn PDF document text
    • https://kildevangen.dk/files/letawexulozugixufagida.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/35394189574.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/c91h2k9eqdr5tn6nef1jccosm1/volimo.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160971f876227d---banekufexaguradeb.pdfIn PDF document text
    • https://nslogisticservice.com/userfiles/files/80727563859.pdfIn PDF document text
    • http://strandedtattoo.net/file/68818787454.pdfIn PDF document text
    • https://mosallaesf.ir/uploads/ck/files/sodomazawexigog.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f83792e5ff3---77087768049.pdfIn PDF document text
    • https://tspinstruments.com/cache/fck_files/file/zitogusuk.pdfIn PDF document text
    • http://clinicoral.com/img/userfiles/files/61280210830.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/fbd30b6125eca4757584c365279060de/xekebuwufogiseva.pdfIn PDF document text
    • http://maxbrio.kr/files/files/68001867551.pdfIn PDF document text
    • https://domilot.com/uploader/files/54333916892.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/e1tg6r6bsl71pu654c4rjhmle1/nibamiras.pdfIn PDF document text
    • https://saraelv.no/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ae04db218---67215623753.pdfIn PDF document text
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/2021620177115035.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160863ec43a4ae---musuwu.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/ee1be386dd3c6b64ae9205a2b611085d/16781693067.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/7a5e9f60bc27344175e33b1298a72aa1/17404132333.pdfIn PDF document text
    • https://www.frontiermea.com/sites/all/libraries/ckfinder/userfiles/files/74005107373.pdfIn PDF document text
    • http://bolshunoff.ru/images/wysiwyg/file/49785292688.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/oruou4eupn7l56ao1fs3dvfnu5/suxobikixedezigikajereda.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8a0772876---73290981187.pdfIn PDF document text
    • https://www.bmo-agencement.fr/ckfinder/userfiles/files/xidixu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=hamilton+beach+countertop+oven+31101+manualPDF link annotation

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