Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a462b874a036909…

MALICIOUS

PDF

62.3 KB Created: 2021-07-05 13:54:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2f00ff6fad6d0d5052f0ef62e70bd49d SHA-1: 34ac0c4f29bd06da2ef2545563a7666135a1423c SHA-256: 9a462b874a0369098b9dd77938a54d2df2ccebefd4333db5e97ad8f9ffcbc3b4
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress installations and disposable hosting, suggesting a phishing or malware distribution campaign. The presence of external URIs and IP address literals in clickable links indicates an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5915

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/gqj1nd4kihp62hnnu4imqk8iis/wunozudep.pdf In PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/5md43lbobj5pphcouofpptuj4a/puzuroginud.pdfIn PDF document text
    • http://jjinline.org/file_upload/file/guribixotuw.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/310538ae8306e1abacb810f4815b7761/wurepegidem.pdfIn PDF document text
    • http://prmakeup.com/Image/files/wikawotavazesuro.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088cf517c78d---fuzadobinig.pdfIn PDF document text
    • https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/nqb8irj6km17t05sd7962m81gu/gosega.pdfIn PDF document text
    • http://blbr365.com/userfiles/file/1623063605.pdfIn PDF document text
    • http://internationalnetworksolutions.net/files/jadipagijagifajeberalisek.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/3b86f00c92713609fadae238e3ee07f3/50196210020.pdfIn PDF document text
    • http://ridendo.cz/files/file/digeva.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/e453e3182b12a4753429b63e57a64409/82493449653.pdfIn PDF document text
    • http://murasakijr.com/uploads/files/53107960505.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/r6lve2po1l55cmj2g4e1qi27k5/88919999377.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afad94b1ec3---8148042141.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160801e823144e---bozubanagafudabo.pdfIn PDF document text
    • http://liqaa-lb.com/files/userfiles/files/72983634532.pdfIn PDF document text
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e632872011---dekavuwugorobasi.pdfIn PDF document text
    • http://pelesiuvalymas.lt/i/File/52093575689.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16096b86a31df6---feritarikisadazorutu.pdfPDF link annotation
    • https://tort-art.ru/userfiles/file/sojowexivizuxivubujizarun.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/ejk5cnvhujesm4t8uitem4f3vq/53884425926.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=capture+meaning+in+kannadaPDF link annotation

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