Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ff95b7e50338e08…

MALICIOUS

PDF

65.1 KB Created: 2021-09-06 18:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4249cd47315076760fd0f1aaab139e1c SHA-1: 2d874a2d7694808c433b680be9224fc45722dcbb SHA-256: 9ff95b7e50338e08f456a28a699c9ec59c6e3930043f451118f32e4b66057c5e
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. Embedded JavaScript was also detected, suggesting potential for exploitation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8034

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 http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1efc2bef91---33870136179.pdf In PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607edd3dd2fa2---laxivasu.pdfIn PDF document text
    • https://aitalk.vn/upload/files/30886590099.pdfIn PDF document text
    • http://hotspot-usa.com/js/upload/files/52951464694.pdfIn PDF document text
    • http://elijasprojekts.lv/files/file/83236320338.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/motek.pdfIn PDF document text
    • http://investbuild.ru/var/upload/file/15660664938.pdfIn PDF document text
    • http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160870c71d98ea---wujemuk.pdfIn PDF document text
    • http://changrung.com/ckfinder/userfiles/files/49050820933.pdfIn PDF document text
    • https://eurouniversal.eu/ckfinder/userfiles/files/52720020773.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/40bf92733fe531037176a3da1e627fcd/78001101125.pdfIn PDF document text
    • http://www.gc-antey.ru/ckfinder/userfiles/files/rosem.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/7d39f002bd9633cdf646aebe5fa11c89/vomerefobu.pdfIn PDF document text
    • https://luminex.pl/upload/file/safekas.pdfIn PDF document text
    • http://portalcom-b2b.es/img/user///file/_0386214001620392348.pdfIn PDF document text
    • https://ou-ravda.com/ckfinder/userfiles/files/fawepo.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160c8f06f1df9d---30499521249.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/829423748.pdfIn PDF document text
    • https://irisapp.cn/uploadfiles/fckeditor/20210903/file/16306821598024.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16077bb6a9ba33---vuronude.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/1528123f3067960ee0f3140119d71bb1/riguvoxexobudamilav.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/mirumovopokerowilup.pdfIn PDF document text
    • http://thangmayedex.com/webroot/img/files/wumokadotug.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b4ac2fdafaa---xugisoseselofikirupulu.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9954bd859---56849153913.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612b0a2730f5b---vadewekozezigumaroninira.pdfIn PDF document text
    • https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bcea943a5e23e6e29f00a2918374c3ff/34582226451.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=roborock+s6+robotic+vacuum+cleaner+manualPDF link annotation

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