Malicious PDF — malware analysis report

Static analysis result for SHA-256 76af079a1c385f5e…

MALICIOUS

PDF

70.2 KB Created: 2021-07-16 12:52:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2af4200ee795fa014a4edc0f5449130e SHA-1: e21ee85ef3b7f39ee2a923f1e3f1652ff7b099e3 SHA-256: 76af079a1c385f5e63ac78194380b35a4db1af9d8327def99c932b643b340d3b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to potentially compromised websites and disposable hosting, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8257

Heuristics 5

  • 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.
  • 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://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/d847d9298e6e0529f0e6c63d783f2afb/56847650117.pdf In PDF document text
    • https://travellifeafrica.com/ci/userfiles/files/48571711895.pdfIn PDF document text
    • https://banktapeunadana.com/tapeunadana/bank2/admin/userfiles/file/wuvibazexipolabebitoroji.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/8ac8f53a2e30e9336da1dca2aa2a3576/77248925723.pdfIn PDF document text
    • http://tc-antey.ru/uploads/files/jimedarewubobetewafexe.pdfIn PDF document text
    • https://alternativecarrepair.com/userfiles/file/vawazunuzibelubotij.pdfIn PDF document text
    • http://chocolatycakes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160817180de6ec---41355274546.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc560117e1---80257373251.pdfIn PDF document text
    • https://whitesal.com/data/images/file/8750_20210603164436.pdfIn PDF document text
    • http://ruilong-ironwork.com/CKEdit/upload/files/nilasixodilinimopibezin.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16076dc5c8209d---rexavefokivoza.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4fddc2187f---38356470866.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160747774a6190---vopupidivo.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/62525909416.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/jaranel.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160e82a4f961a1---17573125948.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/1609fff28bbaec---66533738249.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765f58a11c7---59263777950.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/bopesujabupumevega.pdfIn PDF document text
    • http://dzbnf.com/upload/file///xisalofibiwisonepuge.pdfIn PDF document text
    • http://drstevealbrecht.com/wp-content/plugins/super-forms/uploads/php/files/d469e3a6e019711bcc815856817684dd/68332568606.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b56cb54115d---mazinegeluzas.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/4543d8af561ca0c13d05047e386881f8/63914624776.pdfIn PDF document text
    • https://ferado.vn/userfiles/file/rebaxa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=10+history+questions+and+answersPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000eabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABE 10824 bytes
SHA-256: 60cca47cc93e07762eab687d8d7b7abaa543e0ee70094a58768a289c5071d961