Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea9f502497821e1a…

MALICIOUS

PDF

62.5 KB Created: 2021-05-25 02:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb8e2c2f273185127c7eeb55996adae8 SHA-1: 0417d3e2077208b7d94000cf3324f6739e5de355 SHA-256: ea9f502497821e1a939dc31a8c13d29c7e3a58601e6d514d5bb253bac90632a4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ClamAV and ML classifiers, indicating a phishing or trojan payload. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated, but the presence of external links and the heuristic firings strongly suggest an attempt to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7657

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://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160763e6e2da56---13217499735.pdf
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/5c9jt4d70bcc8778bh431fg6n8/68598778969.pdf
    • https://edoxmarketing.com/wp-content/plugins/super-forms/uploads/php/files/kg999a0j9l4ef918nd0v80u2ao/xakegonuben.pdf
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/16075da60ca752---12822821501.pdf
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/c793b8f6c805302110ac70472b8b552a/9918662211.pdf
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609b75295a514---73101775476.pdf
    • https://anthonygillant.com/userfiles/file/forofalezigol.pdf
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/aqlms8iho86v6itkj95ekmf5u5/katafisivulegivegofepepoz.pdf
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608aafd9497ba---tawalumux.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160780c1f8a7f7---dotunelivuj.pdf
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/aac818ad942ef1eb9e9177a17a7f8ecc/21463051339.pdf
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074766fbfb8a---fadogixafozovix.pdf
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2bce16c31---kepatefiberi.pdf
    • https://alarrabnews.com/images/content/content/file/bidominarobub.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/f93c53010f1963a2e6d09574b898146f/gosejagupesopotodewesif.pdf
    • https://monuments-msk.ru/wp-content/plugins/super-forms/uploads/php/files/4c78d7ae182d57aa324bcb0728557881/biragubuzi.pdf
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/d5c615c9f2dadf4b47a00663867aff39/buloninidesobusitabezobu.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=how+to+calibrate+scotts+turf+builder+edgeguard+dlx

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