Malicious PDF — malware analysis report

Static analysis result for SHA-256 993571eec29883d2…

MALICIOUS

PDF

80.3 KB Created: 2021-07-29 16:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c0802ad3ec9b7c88a5acd7e78536df64 SHA-1: 80dc2d3712b5f449ae64414be82a5c45c58ca122 SHA-256: 993571eec29883d27d4ea23d7ca538c59daa63cf428c19c9a138f5079f1129b1
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and exhibits characteristics of a phishing or malware distribution lure. It contains numerous links pointing to external websites, many of which are hosted on compromised WordPress installations or disposable domains. The presence of embedded URLs and the heuristic firings suggest the document's primary purpose is to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3485

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://wastran.ru/uplcv?utm_term=cloud+atlas+streaming+ita+gratis PDF link annotation
    • https://vcvscr.cz/www/www/fckphotos/file/bugezibijofekuxalomataba.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/81746981811.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/146894b26d87af4145ea15f3bf419df2/48902299519.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608828fe84011---sufodefapudebumi.pdfIn PDF document text
    • http://maszyny.pl/userfiles/file/mujojiro.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c9ac73e1e---namusefudotenuxisi.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c4fcbc6d1b---tevumiteke.pdfIn PDF document text
    • http://slbreakingnews.com/ckfinder/userfiles/files/8378164080.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16089b021e000c---ruvuwefulejoxolojosexera.pdfIn PDF document text
    • http://andersonlawdecorah.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sasoxunemanu.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160926fc818e49---62443850400.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/86ja8dck1hplq86krleo5pva01/buduluku.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9073aa45f9---patelole.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/o06qaqri3ctrne7n20qdbo08fo/9295927308.pdfIn PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d7779fddf---83755398713.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/29p274ghbbo7587m0ro411l3f6/vifap.pdfIn PDF document text
    • https://binarbaidequipment.com/public_html/userfiles/file/jogaxe.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/e46cp3k5jn14fetc3lag00fo50/84263849692.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/0a4fc90e306b275145aa905ccd4a8fe5/60711386025.pdfIn PDF document text
    • https://hospvetcentral.pt/site/upload/file/36548637961.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fee655513bf---49969699641.pdfIn PDF document text
    • http://myshopgroup.com/userfiles/files/pagatikumowoperekepij.pdfIn PDF document text
    • http://prtourusa.com/FileData/ckfinder/files/20210728_B8F9AB2A60FD8909.pdfIn PDF document text
    • http://kokocurry.gm/userfiles/file/lusalatuzidot.pdfIn PDF document text
    • http://mcleod-bobbitt.com/clients/64742/File/59192769217.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c551335a1dd.pdfIn PDF document text
    • http://hongdanhaudio.com/luutru/files/21344580045.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5AC 17148 bytes
SHA-256: b942cd9e9630b00be2759f237a57c46b72f9e3c79b49dc5ec5c1f3ddec3dc118
font_01_sfnt_off00012280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12280 10724 bytes
SHA-256: 02528f38a81502abfd92dce3978fbcbdd2cbfaf515a8c841ecd441c6b61be998

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