Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef02ecbd8e1be696…

MALICIOUS

PDF

52.6 KB Created: 2021-07-09 07:56:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 472f9eb2d02be6657bbedac609d0f0af SHA-1: 0c4b4dabaa2dbc3f3dab540b3efc65acaa194e9b SHA-256: ef02ecbd8e1be6963e07bb7095de93c6d69cc66cf73cadbd9aeecdd31720c9b3
154 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple distinct hosts, some of which are hosted on compromised CMS uploads or disposable domains. The presence of numerous PDF files hosted on these domains suggests a coordinated effort to distribute malicious content or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6036

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://livre-art.com/ckfinder/userfiles/files/gatiselagiw.pdf In PDF document text
    • http://a-daily.jp/app/webroot/contents_img/files/tabujofex.pdfIn PDF document text
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608482a6bfa05---fexol.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/0jgh2u9kurt152tt9ij2jugrfo/sevapurikevowefafavoxoxiz.pdfIn PDF document text
    • https://juniorclublivorno.com/sitonews/images_upload/files/duwagoloxugidomi.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/33317612408.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/c7aa9c43b4351f804dfe8b6577daf19c/kalolejaroxajaverete.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/qv43dkfofuhi4ltgll3qk94krh/vudovezegabeseja.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/e53ba249504a3e880b82ec7ecbee318a/xalosagi.pdfIn PDF document text
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/eef8546a2c6ea92b91413e62f60d66a2/puxelalujatiwa.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b37cc8c79e9---xefapi.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/63661955d566cb13fe8b4c98a4801b20/xegugejit.pdfIn PDF document text
    • http://m2m2design.com/userfiles/wisuvubodizarev.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b8001b80448---kuvomutuvigodofofawa.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/1303b0d64ce58f904f09538634bc2723/vofironiwi.pdfIn PDF document text
    • https://media-get.ru/userfiles/files/45765332284.pdfIn PDF document text
    • http://blissrenewbeauty.com/newerac2c/userfiles/file/relekuti.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/66740532509.pdfIn PDF document text
    • http://all-pass.com/folder/editor/file/lusipivem.pdfIn PDF document text
    • http://goodslib.com/userfiles/files/jisixon.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/bidulotiweporitex.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070efbb88464---kaxiwov.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/ace558c8816192cbdfdf42765478d999/12580447838.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/c50aef6347fe122a937ccb36f6e2972f/vuzuwebosulegiz.pdfIn PDF document text
    • http://ashioke.com/images/library/File/kixeraxenuputa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=tapered+beam+calculationPDF link annotation

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