Malicious PDF — malware analysis report

Static analysis result for SHA-256 d61744c6d775e157…

MALICIOUS

PDF

62.3 KB Created: 2021-09-07 08:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 576c5b4b2acf8008c9e726c0056dffec SHA-1: 4a830059ba94f6950e420b73a7f53739cda554f9 SHA-256: d61744c6d775e157a8173b0315ead01959cb5bc9303f1a6ce3b94cb09c2b6980
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to various domains, many of which appear to be hosted on compromised WordPress sites or disposable hosting. This suggests the PDF is likely used to redirect users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8923

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://havanic.com/cache/fck_files/file/1607506103.pdf In PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070d90275942---rerazusufomulujawap.pdfIn PDF document text
    • http://didocrosby.com/imagenes/file/vijogi.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/7e564997a6545d798cdd88ca240c742c/28758524689.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/eg96tfqd9vttcvhg93aue99rm0/wonemogilomuvuzewi.pdfIn PDF document text
    • http://piazzademarini3ge.com/userfiles/files/12351999764.pdfIn PDF document text
    • https://studiovizia.com/webroot/img/content/files/12347314075.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16109221995095---95524033708.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///13774152271.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/780b930b18100dd4e6d7135aa56629aa/24305637691.pdfIn PDF document text
    • http://veraschwemmle.de/fckdata/file/86968680294.pdfIn PDF document text
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088735b3b597---44817799527.pdfIn PDF document text
    • https://nergizleryapi.com/image/files/31030019291.pdfIn PDF document text
    • https://jairdefreitas.com/ckfinder/userfiles/files/45552011355.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/goxezerepe.pdfIn PDF document text
    • http://quatanggiabao.com/images/uploads/files/fopalujaridepo.pdfIn PDF document text
    • https://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/74b48d3f699b2a40ebb43ff0340deb45/10768595812.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/844c4ca6c8aec3e492b352b65d13bf36/dabobafitidisekorefu.pdfIn PDF document text
    • http://all-paca.com/ckeditor/ckfinder/core/connector/php/uploads/files/77009860634.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/rudutabiwozug.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16081fe103b4d9---15946562678.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/8e3de9cf0575b8dbbde384ac8734aa68/ravanebaviloxawo.pdfIn PDF document text
    • http://massarentearchitettura.com/userfiles/files/tewuwuxiratojegazelifim.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/3032e7fc2d45d761994f46beb74247e1/87211819432.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c0a73f790d9---77609900052.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=les+dieux+gaulois+pdfPDF link annotation

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