Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f90ba4d96246db9…

MALICIOUS

PDF

66.5 KB Created: 2021-09-06 04:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ae830296aad45ef149340365a458b812 SHA-1: caea5e0acc3c4f189e236e24f0683f33ecb5cfb5 SHA-256: 1f90ba4d96246db9513d493b68fd316b2aacabcf23fe50e79fc7d42e9922099e
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as Pdf.Phishing.Trojan by ClamAV, indicating malicious intent. It contains embedded JavaScript, which is likely used to redirect users to external, potentially malicious websites. The PDF also functions as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting, further supporting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4829

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://montagnobozzone.it/userfiles/files/96714501684.pdf In PDF document text
    • http://mofrantech.com/userfiles/file/lotomodanex.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160deb5adb5e73---62085631266.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e7be680299baedc7c52de7f5ec7087ab/zajowilorifok.pdfIn PDF document text
    • https://pointvirgule.ca/upload/editor/file/kunedaropifibapus.pdfIn PDF document text
    • https://www.gullyracing.it/admin/ckfinder/userfiles/files/48390032783.pdfIn PDF document text
    • http://99hospitalitygroup.com/ckfinder/userfiles/files/50960796993.pdfIn PDF document text
    • https://markiza-trade.ru/admin/ckfinder/userfiles/files/judab.pdfIn PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/sebid.pdfIn PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/1023206650.pdfIn PDF document text
    • http://epicridesnepal.com/files/miwodanuviluligu.pdfIn PDF document text
    • http://kaizousha.com/js/upload/files/kuwoziwufa.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/sugukazinexirivima.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/a04e0c214914a9de3533cbbd7629ee52/44499330921.pdfIn PDF document text
    • http://safaraval.com/basefile/safaravalcom/files/lomiropopikasipak.pdfIn PDF document text
    • https://moderator.lt/components/com_mijoshop/opencart/image/data/files/14355040247.pdfIn PDF document text
    • http://klimatyzacjaradom.pl/userfiles/file/47555745031.pdfIn PDF document text
    • http://dostrojar.sk/UserFiles/file/dulojopofil.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/v2iefjhms68knm936eqmo37gul/71290105192.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/0ib0f47hfn6g2p3bq3v7lil5pa/rejufimotevajelipibuvobaj.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/7534298492.pdfIn PDF document text
    • http://chira-med.pl/pliki/87850853017.pdfIn PDF document text
    • https://andrejc.si/files/file/78411489333.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/16129c5ac46c6b---95977537922.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=pimsleur+french+transcript+pdfPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.