Malicious PDF — malware analysis report

Static analysis result for SHA-256 36467de918e23f56…

MALICIOUS

PDF

62.3 KB Created: 2021-09-06 15:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a0ff2147ec473c8ac0590894d6f3d18f SHA-1: dd1a60804e6bea9f3cf3544003ff533c62c8f4c9 SHA-256: 36467de918e23f566b027749a36fb4da5965f82715ac0ccb1574cab0931a58f4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a link farm pointing to compromised WordPress sites, with one specific URL identified as a potential malware distribution point. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7193

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 http://gelikonline.ru/content/Files/juzulefaxuwinoduka.pdf In PDF document text
    • http://vouchertiket.com/airplane/ckeditor/uploads/files/vazeluvulixufurerexoku.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/32009065394.pdfIn PDF document text
    • https://carea2plus.com/wp-content/plugins/super-forms/uploads/php/files/3d87e533403211d667486c9d374c2980/kozaxafowosunibelo.pdfIn PDF document text
    • http://extrastyle.ee/ckfinder/userfiles/files/21602769035.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/9fc0356f004ff2ba23118ded63867598/16129944995.pdfIn PDF document text
    • http://lesbambousbleus.fr/ckeditor/upload/files/96512815055.pdfIn PDF document text
    • http://kondicionery-noginsk.ru/upload_picture/file/32088458058.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210716033416392.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b53fad6c385---kesotunevuxube.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/n8ourc4temm2d6jhsb1j6j0cd6/gotodojariv.pdfIn PDF document text
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16083e6eb7e510---dalav.pdfIn PDF document text
    • http://enerjipiyasalarizirvesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6fa0d4f0bb---20442686117.pdfIn PDF document text
    • http://nesthomes.in/userfiles/file/werazopik.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160fdfd6050b80---wogumadoj.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/dobuvem.pdfIn PDF document text
    • https://sodigital.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bb6d1e3ceca---99628082105.pdfIn PDF document text
    • https://marblo.ph/app/webroot/img/files/74798111102.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/m1lrv4hvvg6886of54thlogofh/dugupulo.pdfIn PDF document text
    • https://omomediacion.com/wp-content/plugins/super-forms/uploads/php/files/fe3fcabc5960bd5779f2bd9e2f2e47ac/sobanunitatimugaxilines.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/5sah15cva09nsi5djr0rc90cq1/xudubemijugab.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160ab3025197ad---febijusov.pdfIn PDF document text
    • http://nmglyxx.com/userfiles/file/luroweg.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/vabezopabawabex.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=inductance+loop+and+partial+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA13 17968 bytes
SHA-256: b9e562d716d72666c2b27c34622818ae692a0ac9d80ea7ca24f88af3972a42d0

Open this report in the interactive analyzer, or submit your own file for analysis.