Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c344a524d6b4ddf…

MALICIOUS

PDF

54.0 KB Created: 2021-06-29 08:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: ac19947426708ba8ddf205c1da81d79b SHA-1: 2771a3a0879e1c5fe1740f3ec055af275623b556 SHA-256: 8c344a524d6b4ddf9165ab1265496fcdf6d13a716b220dda08a24a4b461689c9
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is often used to redirect users to malicious websites. The heuristics indicate that the PDF acts as a link farm, pointing to numerous distinct hosts, many of which are associated with compromised WordPress uploads or disposable hosting. This suggests an attempt to distribute malware or conduct phishing by leveraging these compromised or untrusted sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6438

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 https://netpage.info/userfiles/file/jitifitepogaso.pdf In PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/6fe25a31a1b0f7d682975309025f2ca8/37881142942.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/e93a162b1f0faa725666927cf6278d88/90681653900.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccad1e8373---melonorulag.pdfIn PDF document text
    • https://footballsod.com/images/ck-uploads/files/23825816791.pdfIn PDF document text
    • https://monocroma.it/wp-content/plugins/super-forms/uploads/php/files/353aa8a68966ef7143abc959db1f458d/wejetapita.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/fa2ee7e757e892c3631b1239c717a1cf/vupatafudepamupilesowub.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8732d3b83---2352428322.pdfIn PDF document text
    • https://cmsschoolkg.org/userfiles/file/pagawizikix.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/pebilugoberezasororodepa.pdfIn PDF document text
    • http://fhs76reunion.com/clients/0/00/009202203981f132fd14d012a57c0fe5/File/65374022459.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f74c772bb---wojakonezivel.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/b6a1552365fdda405b5680af5d57f281/46172739235.pdfIn PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/jubosodenizopuvaz.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d4e5b8925d---78494808100.pdfIn PDF document text
    • https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd95602d27---kirudotosexebuxe.pdfIn PDF document text
    • http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160807071e163e---lasadufijululapigibibamu.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6ac588fed---pikodin.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/8e26968b14180263996c4554521a8a66/55643558285.pdfIn PDF document text
    • http://sammyuriasproperties.com/userfiles/files/28744104087.pdfIn PDF document text
    • https://bem-sa.com/img/file/jijotelozifus.pdfIn PDF document text
    • http://biotledlight.com/userfiles/file///durajaw.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b57364abc0a---18804649337.pdfIn PDF document text
    • http://biotop-zamosc.pl/userfiles/file/xukabafikedilonigaf.pdfIn PDF document text
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/16071128c9c9a0---48137666981.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/082f14df99d593cc5f53ab1e537d6fde/13553986309.pdfIn PDF document text
    • http://beytarimcilik.com/admin/editor_resim/file/pejowerovodibololimonuvod.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=write+up+forms+for+employees+disciplinaryPDF link annotation