Malicious PDF — malware analysis report

Static analysis result for SHA-256 266b98bf49b48895…

MALICIOUS

PDF

53.9 KB Created: 2021-07-06 14:25:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: d9ec77e9507c77d9bdd64161df175b3f SHA-1: 81995f8421f2d9553a350145654b79de8971900f SHA-256: 266b98bf49b488955f0e77da335c8901e7f4f9049ccbeaaa70e83021ac872110
124 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV. Static analysis reveals it functions as a link farm, containing numerous links pointing to compromised WordPress upload directories and other disposable hosting sites. These links are likely intended to lure users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4912

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 http://whkmradio.com/userfiles/file/moxet.pdf In PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16086e425beea8---20131242639.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a4066366c9---58424032370.pdfIn PDF document text
    • http://fsoa.cn/userfiles/file/35528676317.pdfIn PDF document text
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/6ab6c0c8d244fea8704290f76288a342/xisedexevagexebam.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160851040d3e92---zegomeriwasupoli.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab868b42546---97803591517.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8621dcc815---wijag.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160b755ceb9ae1---zawul.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/59235143226.pdfIn PDF document text
    • http://www.kymenhome-etsinta.net/tiedostot/files/leguvaderafaxedifimawi.pdfIn PDF document text
    • https://capital-tic.com/upload/ckfinder_temp/files/20210528232633.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16073b9f60c5af---befaxuloko.pdfIn PDF document text
    • http://medica-brno.com/files/49844913957.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160816caf4bec9---57065073667.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607517c413e97---87413042797.pdfIn PDF document text
    • http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160a9764a739ba---9151772355.pdfIn PDF document text
    • https://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/a9932eb65f9d1a18fa563a0be3716bf0/wadalu.pdfIn PDF document text
    • http://tamker.hu/userfiles/file/6888121546.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c5550692d1---37257390437.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/31441899059.pdfIn PDF document text
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/1608066d274395---kokalowugelabizoroxevuvid.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/90f807d29e5aed5d34b9de8bf2f6680e/70294210022.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/a9657483f97a649902107e9a26e73758/56529300207.pdfIn PDF document text
    • http://bjhtdszdh.com/v15/Upload/file/2021620817367326.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=largest+mastiff+in+the+worldPDF link annotation

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