Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec7baf73d5e17648…

MALICIOUS

PDF

65.7 KB Created: 2021-08-14 19:46:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 406bdfb960ad4637f93702cbe3fa82d3 SHA-1: 2a9dab581be98bafa4e34c55b8c392ab07a9c0aa SHA-256: ec7baf73d5e17648383b7baf5eaf140239892c9b14f78242fe2f0c925ecc62e0
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains embedded JavaScript and numerous external links, many pointing to compromised CMS upload storage or disposable hosting, suggesting it's designed to lure users to malicious sites or download further payloads. The presence of JavaScript (T1059.007) and the nature of the links strongly suggest a phishing or malware distribution campaign, likely initiated via spearphishing attachment (T1566.001).

Machine Learning

  • Nyx PDF Classifier malicious score 0.8628

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://kingwaterpure.com/ckfinder/userfiles/files/varezukemavisanob.pdf In PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16079d8a593f9d---20181715676.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/6369217902.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/dolidozoka.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079c921bc37a---bisivapitivexelit.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/mofik.pdfIn PDF document text
    • http://grandrosso.com/js/upload/files/74626677398.pdfIn PDF document text
    • http://sns.hu/_user/file/38701528239.pdfIn PDF document text
    • http://deltools.com/userfiles/file/81027734013.pdfIn PDF document text
    • https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/uh41k1iudu10lhq0vrq0vv53dg/dexegorinenakev.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160893988d1a52---47915567372.pdfIn PDF document text
    • http://alltechsro.cz/files/xeloxafe.pdfIn PDF document text
    • http://kotolantopeni.cz/file/51147498049.pdfIn PDF document text
    • http://sqx.cc/upImgFile/file/20210516102154.pdfIn PDF document text
    • http://2478.ru/admin/ckfinder/userfiles/files/wojapanuzunarineluwutasok.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/17836f0004e0f744a1e0106a485b9995/fopinaradasekodilotoj.pdfIn PDF document text
    • https://vmwarts.com/ecovic/file/lutizoti.pdfIn PDF document text
    • https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/34f599ab5ec5283e0ca5b9514b398105/60827375112.pdfIn PDF document text
    • http://www.startservis.sk/novy/ckfinder/userfiles/files/84811664715.pdfIn PDF document text
    • http://hotelbelleepoque.bg/userfiles/file/95415632196.pdfIn PDF document text
    • http://jacksonreunion.org/clients/71346/File/vetoladunax.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1915e4781---98850474113.pdfIn PDF document text
    • http://polins.org/public/userfiles/file/pufidevuxodup.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+wind+echo+srm-225PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B7 10792 bytes
SHA-256: 94991db782cef699c6595b784f531a41445843ea09e224e32ead2254cc7a6a26

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