Malicious PDF — malware analysis report

Static analysis result for SHA-256 49736f8977b8167f…

MALICIOUS

PDF

54.6 KB Created: 2021-09-06 16:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 07154d622ae68bb13cf39b895a485757 SHA-1: e9be0fe01087ecb11c674005562bd5808fdbd161 SHA-256: 49736f8977b8167fe3189ee6473bda451c4839695a2ebb8095318ae5e43f6b7e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a large number of external URIs, many of which point to compromised WordPress sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a tactic to manipulate search engine results and potentially lure unsuspecting users. The embedded JavaScript likely facilitates the redirection to these malicious or compromised sites, serving as a downloader or phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6436

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 https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/089baabb5509fdc0a97b4b868c1c698d/4307922738.pdf In PDF document text
    • https://mokhalasati.com/userfiles/files/fodupofutefavikupusa.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/d32c5d4ea022e2142fccaca5f1902f2d/velolifagonerebago.pdfIn PDF document text
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/80210136584.pdfIn PDF document text
    • http://kahounova.cz/userfiles/file/39742615128.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/380229315.pdfIn PDF document text
    • http://arserwood.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/210526032732860685txc6za.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/90742306825.pdfIn PDF document text
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092929ed2134---25642346906.pdfIn PDF document text
    • http://zonweringbelgie.eu/ckfinder/userfiles/files/26242289138.pdfIn PDF document text
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/8aa8b8fae86e5c09dc114321d06a0ed6/22166559747.pdfIn PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/lqkoa174rpj7pdnmms9pt7l1us/4439478391.pdfIn PDF document text
    • http://qtjdb.com/UploadFile/2021/06/19/file/20210619_010342_117.pdfIn PDF document text
    • http://pension-erlkoenig.de/img/editor/file/fanekekageweb.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160c386d2d3068---pofenokege.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dca4d002075---vogibotodibaz.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/kivefafusuvufagumekog.pdfIn PDF document text
    • http://caopump.com/admin/userfiles/file/zokaburesebiz.pdfIn PDF document text
    • http://avandcie-automation.fr/ckfinder/userfiles/files/17800402630.pdfIn PDF document text
    • http://natur-pet.cz/webpagebuilder/ckfinder/userfiles/files/70030035031.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/erscgq68482diea5rlf6fodopq/wogowogamesowi.pdfIn PDF document text
    • http://sushiosushi.com/uploads/files/73320186170.pdfIn PDF document text
    • https://atraba-holding.com/userfiles/file/76488756934.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edd5ca099f8---jopadinib.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/04aff264d813e0af0541b586de63e3f2/toxavefizunotolevalolafo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=autocad+manual+pdf+2019PDF link annotation

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