Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd0e3ba0a4c7d145…

MALICIOUS

PDF

86.6 KB Created: 2021-07-08 03:25:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: b8415abff14157561681e06ac2f31beb SHA-1: 847b05c060bb44fdf8d3d178922989435a57d62a SHA-256: cd0e3ba0a4c7d14596a63aef4afe69e24158895980cf6792d4e240c83768670d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised websites or disposable hosting, indicating a phishing or malicious redirection attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. The file's structure and content suggest it is designed to lure users into clicking links that may lead to further compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.2479

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://tizianaiberti.it/userfiles/files/70779921104.pdf In PDF document text
    • http://e-skala.pl/userfiles/file/61566718862.pdfIn PDF document text
    • http://meandnetworking.com/ckfinder/userfiles/files/95704748173.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/24fu9jo33fr4ktafosgq5bl5lr/fegiginukalibazipodinobew.pdfIn PDF document text
    • http://614move.com/clients/4890/File/7382290154.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160782310d2cbb---26246059882.pdfIn PDF document text
    • https://ipic.vn/userfiles/file/kexim.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/12pjfnpd7q3ko8bvf1eeala3s0/31069193919.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/luwudolasebebukedo.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/2fhes7fmie75omvjv6fkp98i42/vemivopelolozu.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdcaa2595a6---jefubukubara.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/10670893484.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/rv3c0pgdes2rogsr01c7mrn314/35178756389.pdfIn PDF document text
    • http://bloomx.com/sites/all/sites/bloomx.com/files/22684016988.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/e5db995893eaca2071642d832f42fccd/7077817226.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/d029096b5fb98a758d721b3b17957402/wudeviro.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b1239299990---94357262171.pdfIn PDF document text
    • http://www.liveartsaskatchewan.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f449eadbe---sujogifadutazilipulug.pdfIn PDF document text
    • http://unnatiwelfareorganization.com/ckfinder/userfiles/files/godepu.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c37e18b60---20857153879.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/13282164894.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/latijuzikebevenavip.pdfIn PDF document text
    • http://sushrutproctology.org/ckfinder/userfiles/files/32539897967.pdfIn PDF document text
    • https://egyiksem.hu/uploads/file/sexudikisusezovugux.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/fibuvik.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160baf5f5a3e1e---bunodifomo.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/8af9102a16e3a7a8c6feaa6c4448f3f5/22472720877.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=from+word+topdfPDF 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_off00010d8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D8D 10016 bytes
SHA-256: 00680cc981df981da6a2cc8107f01289f92bf2ffe1e8e2272bfb08e53bc2daa4
font_01_sfnt_off000123c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123C7 17064 bytes
SHA-256: 3d0057363a5b31671218256626b797803c1ce2e39f5085eb6b3419c782da0746