Malicious PDF — malware analysis report

Static analysis result for SHA-256 76b8412ca60de29c…

MALICIOUS

PDF

54.7 KB Created: 2021-09-21 02:38:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3fb6ea2678b5c9ca412815d9e995004f SHA-1: b0caee045cfb081183fb248526b5584262382b48 SHA-256: 76b8412ca60de29c41b88adde2f81111a53883e259d016557cf14c29c361d50c
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The presence of a link farm on disposable hosting, with numerous distinct hosts and a 'utm_term_redirector=True' flag, strongly suggests a phishing or malware distribution attempt. The embedded URLs, despite some being marked as benign, contribute to the overall suspicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7352

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://thewesternmist.com/userfiles/file/90444963334.pdf In PDF document text
    • http://dj-venci.com/uploads/pages/files/bibevenubinilizofirepe.pdfIn PDF document text
    • http://presssimayeshahr.ir/pic/file/94432255757.pdfIn PDF document text
    • http://mishelik.ru/userfiles/file/97460297336.pdfIn PDF document text
    • http://greddy.com/admin/common/ckfinder/userfiles/File/pabuj.pdfIn PDF document text
    • https://familienbilstrup.dk/userfiles/file/76835253466.pdfIn PDF document text
    • https://suadienlanhhanoi.net/upload/files/pixogosovenawolulujileje.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/7msjom9d0rfphkuqoe6f67ret2/78995673355.pdfIn PDF document text
    • https://jetaime-shop.dvsportbg.com/files/150850628.pdfIn PDF document text
    • http://claudiamelchior.it/images/file/98732194608.pdfIn PDF document text
    • http://mp-hd.de/data/aktualnosci_imgs/file/favubebumazafegejewa.pdfIn PDF document text
    • https://yenicekentkaplicasi.com/userfiles/file/94412481662.pdfIn PDF document text
    • http://sentezetutmerkezi.com/upload/ckfinder/files/77155536662.pdfIn PDF document text
    • https://rabudiagnostic.com/userfiles/files/bevofad.pdfIn PDF document text
    • https://majubesar.com/contents/files/zowimafilagebopepaluzed.pdfIn PDF document text
    • http://3wsystems.com/shipinc/userfiles/files/topupuxi.pdfIn PDF document text
    • http://studiolegaletrotta.eu/userfiles/files/49652172549.pdfIn PDF document text
    • http://adacu.org/userfiles/file/20210903001910.pdfIn PDF document text
    • http://satcomlink.com/userData/board/file/wimovurosedapivapadikuv.pdfIn PDF document text
    • https://funcarele.com/ckfinder/userfiles/files/ninarufok.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/egltudckkmtk0u6v3e0b1pqb0a/9353025651.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=ms+office+2010+iso+free+downloadPDF link annotation

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