Malicious PDF — malware analysis report

Static analysis result for SHA-256 f030d677996df1b1…

MALICIOUS

PDF

43.4 KB Created: 2021-06-28 07:51:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 87d27092ee2e0f1cdf8cf281ce90ae90 SHA-1: 0472a8236e8ff322a807f3dc1e7ea55a324a672b SHA-256: f030d677996df1b17f043f7acf9ce4c5214e6a44946497e4aefafdef77d78628
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as a malicious PDF by ClamAV and an ML classifier. Heuristics indicate it uses an image-only lure with clickable actions, typical of phishing. It contains a link farm pointing to compromised CMS uploads, suggesting it's designed to redirect users to malicious content hosted on these sites. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6997

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 43 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://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c218efa80ca---39984841414.pdf In PDF document text
    • https://wpsqld.com.au/wp-content/plugins/super-forms/uploads/php/files/58c7a65e746a8620933c081a6ed20102/21551248797.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1609c20b192feb---nolupuzefilelesuger.pdfIn PDF document text
    • https://regenerativetherapyforpain.com/wp-content/plugins/super-forms/uploads/php/files/952e0b5008ac96384e01f62e610789a4/wedesol.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077b8589f79c---45445373017.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/gjtnqau6j1ii2glhi55jp4hmvp/17676490517.pdfIn PDF document text
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16081d4323b7d6---16306513734.pdfIn PDF document text
    • http://drukarnia-skawina.pl/app/webroot/media/files/92552452039.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aec9fba04a3---71430012080.pdfIn PDF document text
    • https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/aca75d14d21872f9bf490411b0d4a321/5695595159.pdfIn PDF document text
    • https://zabulgaria.org/userfiles/file/kowavozedokisiwopiwegav.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/nenamisenikovivud.pdfIn PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16095d57fdf094---lasasiwibidiwemiso.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a78c60d732b---tasasumisuvo.pdfIn PDF document text
    • https://kurtoglumob.com/upload/file/rekijosukujakezogerivira.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/l2qa9iklnt06do7of6gt3s6qpl/nikekesoribulobizis.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c32dc64f253---telimixagokiwekawaz.pdfIn PDF document text
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/8f0060b16a20f45519659a3def7c433f/7553115051.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/64938486179.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160773c0e28434---pevaduwuvo.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6f1473bff---4020191201.pdfIn PDF document text
    • http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099e97a50364---guwetunusagebilisabe.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/d85r1j2smspnva8smfhe8ch328/56775100020.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=importance+of+ethics+in+sportsPDF link annotation