Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba27844963cc28a7…

MALICIOUS

PDF

92.2 KB Created: 2021-07-17 16:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: eeab8e7eeaf3a2b2afc4e481f41435bb SHA-1: a94375a271657e93113d2bc7f12fe1d0d3482f95 SHA-256: ba27844963cc28a784edb1fb28f62497ee8b4bb986dc977482e5628ce8c40917
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating it likely serves as a phishing or malware distribution lure. It functions as a link farm, with numerous URLs pointing to potentially compromised websites, including one hosted on premiumresourcing.com. The primary purpose appears to be directing users to external resources, possibly for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5370

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 http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6dc2139f75---54460516840.pdf In PDF document text
    • https://aspirans.com/files/file/xorubitorusotebib.pdfIn PDF document text
    • http://debandhelder.nl/ckfinder/userfiles/files/wuwazokokekogafexejado.pdfIn PDF document text
    • https://energooptima.hu/upload/File/vitenolidotelof.pdfIn PDF document text
    • https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/8b5d71087058fbac0d9ea24ece45ef7d/gadavet.pdfIn PDF document text
    • http://cableesmaltado.com/d/files/87418211806.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/a5cd0bc047f8904f00dbb59e481763e2/dazowa.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/xuturuwanodak.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/21ed0873e54031d0321538450ef893cb/totolamisubizozadara.pdfIn PDF document text
    • http://zoldjogsi.hu/uploads/files/zixeraxerunu.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/fipebi.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a49d0939d2d---zajidinozutepatitivibo.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/l3npku1b0itog3rhc1q46abg9v/soluronezoxevolonerubedu.pdfIn PDF document text
    • http://x04ydivan.ru/userfiles/file/96441446033.pdfIn PDF document text
    • http://wisdomtours.net/upload/file/38100379266.pdfIn PDF document text
    • https://pubs-icfas.org/icfas_new/dev/ckfinder/userfiles/files/66632185625.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/mv5jdcj4k91fh69095j22afgrt/59624933258.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a1f9f74fb85---midopoj.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb2ecdfebf---jexurokizo.pdfIn PDF document text
    • http://kurier48.pl/files/userfiles/file/puvosasowifu.pdfIn PDF document text
    • http://jkbprivateiti.com/userfiles/file/63007280607.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/a31bb9c4773ee4b9d0a9087edd946f91/93088626685.pdfIn PDF document text
    • http://bawaconstructions.com/editorData/file/65402437951.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/85228075929.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=mendel%27s+theory+of+heredityPDF link annotation

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