Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abd8560935f51eb…

MALICIOUS

PDF

46.2 KB Created: 2021-06-18 23:17:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: dd1623381a285421f7507adc5bedc585 SHA-1: 26697cb3382cff8bb25d193b9a401598c4b7d6fb SHA-256: 9abd8560935f51ebc1e3b573e04dba9ab0006668a2ce2c299af939bb86fd8904
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress upload directories, suggesting a link farm or distribution point. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, which is not typical for legitimate documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7492

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://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607c65cc64f76---99059944450.pdf In PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16078865174bdd---foremoraxejezazeral.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160849426b3e95---31874957633.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/mutemekixivubuza.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/eeb432e22d9f3077d483b9dc9df3bc61/lexutaxajeji.pdfIn PDF document text
    • http://kahounova.cz/userfiles/file/33721733.pdfIn PDF document text
    • https://xn--p3t29jo1ed4o4xw.tw/upload/files/xakixoxelidamamemosabi.pdfIn PDF document text
    • https://cleaner.pl/userfiles/file/mimugofeba.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bec97f7e680---tugeputuzozis.pdfIn PDF document text
    • http://agama-rc.com/upload/files/rizukilulededagiwutam.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983cb40ebda---2977839829.pdfIn PDF document text
    • http://93564497.com/userfiles/35373631831.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160787521884a2---3160038015.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6ab7961dad---53713431775.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=abdallah+humeid+full+quranPDF link annotation

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