Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b4b0648c5cf3576…

MALICIOUS

PDF

64.7 KB Created: 2021-09-05 08:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0e84cd61acc1ab49413ecaeaf3bfc8a2 SHA-1: 2ec4853d21c9e520ff377895ac7a5ce7f356c811 SHA-256: 4b4b0648c5cf3576a1574357383571206aeb1807da18ffabe6f5392246b5c9fc
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many hosted on compromised or disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to trick users into downloading further malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7281

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://vegas-shop.net/uploads/files/dezivavuxenigolamoki.pdf
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b770b80b577---malegozotufe.pdf
    • https://rhuyscampingcar.fr/images/files/65777049516.pdf
    • http://tivatijapan.com/uploads/userfiles/file/94229368674.pdf
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087967e11362---rifewukedijumi.pdf
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/79v5cs5tfmqalq2ea2d8bujcl4/32587894117.pdf
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/ae422ee8e4037a7898e27a86e086a15c/4847390132.pdf
    • http://eprdel.cz/userfiles/file/rarekewepewijofixawino.pdf
    • http://tipkeo.com/js/ckfinder/userfiles/files/tubodu.pdf
    • http://shop-cartuning.pl/userfiles/file/5795183894.pdf
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/q49r15rf8q007nq0noffr95r3l/70373487270.pdf
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160749553a988a---1588838213.pdf
    • http://dreamcatcherltd.com/userfiles/file/92631582927.pdf
    • https://zemiigori.com/uploads/file/1293773116.pdf
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa20e0d1355---toxabuzami.pdf
    • http://ramenhajimetustin.com/uploads/files/27541962655.pdf
    • http://cbelmira.com/wp-content/plugins/super-forms/uploads/php/files/9721995dff362dbc0e277c577fe06208/43143518652.pdf
    • https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/95248837821.pdf
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160883db3c7961---dobixur.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/t4s7m0e4srvqdpuioiqqvha317/mivojopoxojabobojewof.pdf
    • https://takipcisec.com/calisma2/files/uploads/lubuxumefarokeluzug.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=scarica+modulo+disdetta+fastweb+pdf

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