Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0467bb095a3700c…

MALICIOUS

PDF

97.1 KB Created: 2021-08-17 11:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: aab9b15d95356703c49a1dfe7d9d79b8 SHA-1: 52d8ed688c575251374ecaab1ba275b637294ff4 SHA-256: f0467bb095a3700c576fdde71d0f4232e43623ef90dd3405be2857225486b443
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs pointing to potentially compromised WordPress sites and other disposable hosting. The primary purpose appears to be redirecting users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5452

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://garglob.ru/uplcv?utm_term=numeros+mayas+del+1+al+10000+completos+en+orden PDF link annotation
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d770e73c7b1bd875ec601217733a6e58/91984613677.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/4dcd0b5bde4e44888cca4bffcac600fb/jebixuxepaxo.pdfIn PDF document text
    • http://permianhighschool1970.com/clients/e/ef/efee9fcbc667252fc4b649c8163d3733/File/85743870299.pdfIn PDF document text
    • http://pajurioverslas.lt/ckfinder/userfiles/files/monadepusapavoz.pdfIn PDF document text
    • https://z87992961.com/upload/files/20210709103802.pdfIn PDF document text
    • http://homenet-spb.ru/userfiles/file/55995148569.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160e77258bf65e---59020333700.pdfIn PDF document text
    • http://donaldnathanlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/6587764640.pdfIn PDF document text
    • https://datatech-int.com/userfiles/file/74791272953.pdfIn PDF document text
    • http://xn--aknmedcal-wpbe.com/uploads/file/rarovuwoki.pdfIn PDF document text
    • https://bladmedyczny24.pl/wp-content/plugins/super-forms/uploads/php/files/e37817ec316aae941a39ff897e04c2c7/12038849591.pdfIn PDF document text
    • http://grhs1983.com/clients/72571/File/zajafotozapuze.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160fef5dd41c0d---vogobivefejibini.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/bikix.pdfIn PDF document text
    • https://www.pepinieres-gey.fr/ckfinder/userfiles/files/rovunuwadojatodem.pdfIn PDF document text
    • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080158226274---femiwiwogi.pdfIn PDF document text
    • http://garderoba.sk/images/_file/tilaxagejukumuxafatagam.pdfIn PDF document text
    • http://udemadriatic.com/userfiles/files/jadopotirepetikula.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/1da30ea29ff988741b29aee41033713a/30534203434.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/67d7663c2a5bb6ea7728e5251e57eb72/42960071080.pdfIn PDF document text
    • https://anthonygillant.com/userfiles/file/13348973724.pdfIn PDF document text
    • https://systematix.pl/userfiles/file/dudekusapamebupava.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/jifuza.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/550169601a43c0e393dbd55a14187225/24236780892.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/3f4c9bd0f6b422c370a661a5b8784db1/rozoxexitem.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/h0i66i65rs42gjp5l11vdqval5/nojorovek.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC9 19212 bytes
SHA-256: ee86bc6f9e3ed9fc19a5d7e6b634c08d10ab536e1b0266f67ec0c7e8c1b9f649
font_01_sfnt_off00013117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13117 10948 bytes
SHA-256: 73cfd9dd0bda9429255d8baac9758ce9a3c133f3b1268528cd9e9f69fd42a599
font_02_sfnt_off00014a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A88 21376 bytes
SHA-256: 5eb27b92934673b23000fde81e9fa7b5e6ff135b3d11240fa25c0b700eeb86de
font_03_sfnt_off00016f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F29 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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