Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6bcb15b9d267de…

MALICIOUS

PDF

55.0 KB Created: 2021-09-15 23:56:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0a69db85a9d8d59ec678fbc5a733c04f SHA-1: af1bab07400a4867385e743c4263fe4e2310d608 SHA-256: 7e6bcb15b9d267de0c0185e1298642256a5c2adab383eeae6efc60aa1ea4c70c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating it's designed to redirect users to potentially malicious sites. The heuristic firings, particularly 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM', strongly suggest a link farm used for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6108

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://manhchenang.vn/webroot/img/files/2388513995.pdf In PDF document text
    • http://due.pt/js/ckfinder/userfiles/files/34484771047.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/mesawisogudemavilakok.pdfIn PDF document text
    • https://karpzbeldowa.pl/uploads/userfiles/files/32089148255.pdfIn PDF document text
    • http://internet-trade.cz/UserFiles/file/15138700903.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/478472afe6844cd88eb20c3651a2c4b9/53686320488.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613dadd57d4c3---dofugik.pdfIn PDF document text
    • http://domexpo.ru/up/file/8092518946.pdfIn PDF document text
    • http://brain-sh.tw/upload/file/wunawelajagimatopowevopu.pdfIn PDF document text
    • http://olech-rzeszow.pl/userfiles/file/27625415895.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1612ed7b7aecaf---35266648929.pdfIn PDF document text
    • http://ajivikafinance.com/userfiles/file/rajunugi.pdfIn PDF document text
    • http://restaurant-lyons.fr/userfiles/file/pojekupufakijinobo.pdfIn PDF document text
    • https://almentispharma.com/ckfinder/userfiles/files/vanikodu.pdfIn PDF document text
    • http://imobiliariaimperio.com/files/files/5813623290.pdfIn PDF document text
    • http://landpas.pl/upload/file/gurirarosevorizebefokuzox.pdfIn PDF document text
    • http://xn--aknmedical-yub.com/uploads/file/96301660623.pdfIn PDF document text
    • http://delfosventures.com/userfiles/files/rotugukijuxokenis.pdfIn PDF document text
    • http://www.ags-sib.ru/ckfinder/userfiles/files/fatotes.pdfIn PDF document text
    • http://whdhgs.com/uploads/file/20210910185228787.pdfIn PDF document text
    • http://sov.tranovice.org/webpagebuilder/ckfinder/userfiles/files/1182467673.pdfIn PDF document text
    • https://reklama71.ru/upload_picture/sasiwalig.pdfIn PDF document text
    • http://paintmaster.hu/js/ckfinder/userfiles/files/27288811441.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/1613a773b184be---17634293507.pdfIn PDF document text
    • http://thevalleytrader.com/files/vipegojinulul.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=among+us+on+mac+freePDF link annotation

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