Malicious PDF — malware analysis report

Static analysis result for SHA-256 578778aa47c7b642…

MALICIOUS

PDF

48.6 KB Created: 2021-06-29 11:28:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 85281e736690bf15bdfb2e05008f1ee6 SHA-1: 9ef38aa7d0a2f2131a6d976b2afb889db317b762 SHA-256: 578778aa47c7b642ba4841e1c4361b788f5fd03ac0cc25859d23b6826667387d
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories and disposable hosting domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly support its malicious nature, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9298

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://sjar-tech.com/uploadfile/file///2021062214243398.pdf In PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607c9c16612ae---fulomomimibonip.pdfIn PDF document text
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607206f59bc93---vagunezasijixobaxezuta.pdfIn PDF document text
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/wedibubovegam.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/uktjn63jjp3t5idq7k9b7qm5r0/61486861413.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5f5b4a8adc---tebiwavego.pdfIn PDF document text
    • http://netmutum.com/userfiles/file/jizesesiripiki.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef7c0dfd29---wunudepuwokojov.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/mekupelaxuwemijokidukanep.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160868ad3b2a6e---tanoborawulurisebu.pdfIn PDF document text
    • https://www.prowallpanama.com/wp-content/plugins/super-forms/uploads/php/files/3ffba3da154d0dc327697072d66fc29d/sutopi.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a548addc844---sutasanawave.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b17882d487d---64034462845.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160d4ef040aac9---wufanizoduzuzudivumovageb.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c4595cf0652---51089406894.pdfIn PDF document text
    • https://moveo-sport.pl/userfiles/file/85825951461.pdfIn PDF document text
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/3cf81f5fbd6397eff77e1227aa864c37/xezalotapamalofiguteve.pdfIn PDF document text
    • http://uniroll.pl/user_images/file/94013633286.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/56158f9e8dd00f2855fb20a246f28d23/28769178495.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3c4a37d11a---bisibaxolopajonoxetas.pdfIn PDF document text
    • http://jaatkinson.com/userimages/dudopizegevimorivari.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609f2ded01637---ramulaxofebetalam.pdfIn PDF document text
    • http://svsteinfurth.de/radsportfiles/file/sizosawev.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=ssis+data+types+to+sql+serverPDF link annotation

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