Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ac99cda73ab256…

MALICIOUS

PDF

69.3 KB Created: 2021-07-27 12:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 1de7f76be28ccc7811b5430b48040711 SHA-1: 7e2db37bba647872ddbbb98ee7a804d0cc6cd635 SHA-256: 76ac99cda73ab25680cf921c85cbeab9ec3474ad9c7c16899e581ba605b9de8d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to distribute further malicious content or phish users. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8802

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://www.tai.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa1cf89ded---46345918304.pdf In PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16085ae20b929a---7351062058.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/6b3845f1d27f282ee9b682aac9814603/luruxekumurekenu.pdfIn PDF document text
    • http://takeacode.net/user/d41d8cd98f00b204e9800998ecf8427e/file/dalawafemubesum.pdfIn PDF document text
    • https://ka-base.no/images_content/file/xodotezakunaw.pdfIn PDF document text
    • https://freshchannels.com/home/sites/freshchannels/public_html/ckfinder/userfiles/files/jozakis.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160fabebe63b4e---90260981115.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/40290593520.pdfIn PDF document text
    • http://rheinmotel.com/userfiles/file/79258820065.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/4kticc2a75en23v9pa1j2s6a6o/bokagid.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/261732409335.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/37820729329.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/cjlf784f6oet3h4fa5ri60dea7/ponuzuvuva.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/fexikenaxotipasagokik.pdfIn PDF document text
    • http://amadpich.com/userfiles/file/43473352113.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/3dj7ukfgc66q3b0fmfvqimrc46/62882883404.pdfIn PDF document text
    • https://peterdegendt.be/file/vewugawaxetunoveboja.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/ffutnma1r79phrlvlhasejp5ud/53748911255.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/2aba56056a96b93b94bd5f53d0234a61/67116323810.pdfIn PDF document text
    • http://appartenvue.net/appart/upload/images/bekumesonofoxukozokatil.pdfIn PDF document text
    • http://akkoryazilim.com/userfiles/file/32738946426.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/784a127f5effcbab8639a4ee3c80d88d/72120240340.pdfIn PDF document text
    • https://nepalonetours.com/userfiles/files/golaposejomu.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e490015543d---72954126788.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=bluestacks+2+download+for+pc+windows+7+32+bit+2gb+ramPDF link annotation

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