Malicious PDF — malware analysis report

Static analysis result for SHA-256 e210a4b55e27537b…

MALICIOUS

PDF

54.7 KB Created: 2021-08-27 03:25:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a3c60cde459b9290f33664f04664d69f SHA-1: 73031dd78eef3e90be9d6d294a680ca63fcd87c8 SHA-256: e210a4b55e27537b38c93dbc37f5816295c6480ee2c4ca7f3cad85fa702f299e
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 a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9148

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 https://drafthe.ru/uplcv?utm_term=mineral+king+to+eagle+lake+trail PDF link annotation
    • http://abcbyspu.net/ckfinder/images_store/files/21919245591.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/dvbecq01tpnbn14uns83hn42o1/wadiwirabejowezezebe.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/u6cnird7trijoah9f6rnru2n54/31395857469.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080e4e4bc671---60960312290.pdfIn PDF document text
    • http://vamaconsulting.sk/userfiles/file/89243958329.pdfIn PDF document text
    • http://tribo.kz/userfiles/File/84811340427.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dbba07d0d5---22057598133.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8aa870e490---16575850402.pdfIn PDF document text
    • https://congchung7.com/upload/file/repilupetagamajon.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/52375310274.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/so9b6lbke6tjoqvdm7ijfg6dt7/buxisigesasut.pdfIn PDF document text
    • https://saatyapi.com/upload/ckfinder/files/37618800886.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/foxanud.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1606e7c73f036b---45627442267.pdfIn PDF document text
    • https://asiantms.com/ckfinder/userfiles/files/81719469914.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/befumusivamozofisedidonu.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/6dfcrf9fvkm5qkbkqnkn7loj98/95816614457.pdfIn PDF document text
    • http://daiduongmetal.com/uploads/ckfinder/files/43409582391.pdfIn PDF document text
    • http://bfr-bialapodlaska.pl/userfiles/file/95500528137.pdfIn PDF document text
    • https://lederstuhlshop.de/ckfinder/userfiles/files/48574941521.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/8109725c675cff8004c5ea3109b3d8f1/61858059117.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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