Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cad6001c7ee0b72…

MALICIOUS

PDF

62.8 KB Created: 2021-09-04 15:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d26950525739de8a8b276e58c81c7a98 SHA-1: 851b278e89bf2d93d811080f4a9fb0c9f850ec2f SHA-256: 2cad6001c7ee0b7233105691e397b306e576b291523fac3f774fee75a4a547e5
154 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as a phishing trojan. Static analysis revealed it contains a link farm pointing to multiple external websites, many hosted on compromised CMS uploads or disposable domains. The embedded URLs suggest an attempt to direct users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5661

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://buchtel1967.com/clients/26382/File/63152058933.pdf
    • http://globaltruthmediagroup.com/clients/a/aa/aa8380eac451876ae6ab993bf3a720d6/File/86372243561.pdf
    • http://messtores.ca/fck_user_files/file/dogawopagenapagezitimet.pdf
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/omocdvj5ui51gmvo4eppitdtpo/jumujekowisupekisux.pdf
    • http://mebco.ru/images/file/67231612178.pdf
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/vm7umsfgckmh86q5jj4jgh3870/gepagaturonapitaga.pdf
    • http://backupcenters.com/userfiles/file/femevopit.pdf
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/0gl904risthm8ek9mbcoom03su/laketolepotapogenak.pdf
    • https://charlesstreetvideo.com/userfiles/file/zafinuv.pdf
    • http://saigondome.com/uploads/userfiles/file/49206180239.pdf
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a97ded1ba42---lumomusutesesuxufuvituwu.pdf
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9f1cfda7f4---salefisasesapikabez.pdf
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9e418c7c29---navazewunapat.pdf
    • http://fpole.ru/sadm_files/79863988283.pdf
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4463da61f---bojozizadapekoj.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079958e79f76---25272640219.pdf
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/161201c4dbcfe8---19693328409.pdf
    • https://ljlconst.com/admin/images/file/91663408778.pdf
    • http://gruppocreta.com/userfiles/files/39215519011.pdf
    • http://zzquansu.cn/d/files/88732555073.pdf
    • https://aukshanya.promosing.com/alpha/ckfinder/userfiles/files/kidinelajiladuxep.pdf
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c680bd687a5---91641025804.pdf
    • http://aal.tw/uploads/htmlupload/files/bufufujimavizegomalat.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=mimetismo+batesiano+y+mulleriano+pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c83e.bin
2d0aa0d96cf3c94a1e72eae7d03659b50d7a8412f798c8318b619f469a2fdf0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC83E 11004 bytes
font_01_sfnt_off0000e19e.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE19E 16792 bytes

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