Malicious PDF — malware analysis report

Static analysis result for SHA-256 5da32521ee4e6ab2…

MALICIOUS

PDF

41.6 KB Created: 2021-07-01 19:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d421af6cb6f00849a11c8a30886325a8 SHA-1: 67f6f495a022e6b03982e501f34b7af8d88e55f2 SHA-256: 5da32521ee4e6ab2201dcfbdd7f3d1f6cde3c339b69aa990501ba1adf943482e
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF is identified as malicious by multiple heuristics and ClamAV, indicating it's a phishing lure. It contains numerous links to compromised WordPress upload directories and disposable hosting, likely redirecting users to malicious content. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, suggesting it's designed to bypass simple text analysis and present a deceptive interface.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8260

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 41 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://sdtrafficticketlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sedagi.pdf In PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160c108c25c7bd---69414591899.pdfIn PDF document text
    • https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/3a06513bc5e6991d3c8638c30903801c/xenexelavezilazilogu.pdfIn PDF document text
    • https://biovuspharma.net/userfiles/files/burowobapudara.pdfIn PDF document text
    • http://maxkbm.com/clients/2/28/28fcaa936e2ecbeb6c9a97ea0f1ab253/File/49846371667.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160948684e019e---3499192353.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c9bf289dc8---75814248626.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608194289cf5c---51927203001.pdfIn PDF document text
    • http://nesemlak.com/test/images/uploads/files/resoxutomagozug.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608593083dd0c---kimodibipepegoke.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/978aa1a10baf872964eaea2aec34b1d4/32434208401.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210625090947.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/gexiparepigezigutet.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/83upl193p4m4imboao5k8q56vi/wegokidixunirawakoxeliv.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/b3f5f17a7c3ec08b9db20e6de16f4277/tavomusedagepewatiwegulov.pdfIn PDF document text
    • http://kotolantopeni.cz/file/subadowenemomogebar.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/ioh0ctjf3u7f89m8n9c9ek728b/riworuma.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/34709143715.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/23293119562.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073ffc819779---depufonisijix.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/ueojoq3rd5fh3al7jac7518t16/jezorinepiwuvanuve.pdfIn PDF document text
    • https://acryl-bg.com/userfiles/file/gupel.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/97dcdfa93cd3583fe781bc95268e2e93/14982343990.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/fubojodepevokurusaliwi.pdfIn PDF document text
    • http://novussiteyonetimi.com/uploads/file/63108240047.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=hydropower+energy+advantages+and+disadvantagesPDF link annotation