PDF malware analysis — malicious · a805415784f16005

MALICIOUS

PDF

61.0 KB Created: 2021-06-02 14:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5d591c4eaeea3f86f7551abc79840515 SHA-1: 4d04c07ec164dfa1e52cf6f6f9a96b0e5238ba91 SHA-256: a805415784f1600522cb8db4c74793ac43eeaa4a299cbf1aec29eb20f5843518

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites, suggesting a link farm or SEO poisoning attack. The document body is heavily obfuscated and unreadable, but the heuristics indicate a malicious intent to redirect users to external URLs. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 0.6609

Heuristics 4

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://pixomot.ru/uplcv?utm_term=types+of+garment+defects
- https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9b1135565---85217670770.pdf
- https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607988b7251de---97124930422.pdf
- http://wisdomtours.net/upload/file/gukovanapamakimim.pdf
- https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/96d4484f707b0a2de7453c444a86a879/14458117530.pdf
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/baa55f41aa360ad47e16360541c2a961/jogomomupagusobof.pdf
- https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/609d62916626c0e4e3e6412445e82578/18765186819.pdf
- https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ece689a55b---womev.pdf
- http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608dfc1517c30---10839326308.pdf
- https://deconkhoemanh.com/wp-content/plugins/super-forms/uploads/php/files/mkh7s5idntru0goaa3fjjvj2vv/tolipifizexozokote.pdf
- http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607ce15fde1b5---bejagogegezajijadipera.pdf
- https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/evjn4f8tag24s0sake7v3o1ii1/fanona.pdf
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160850af1a008c---zubatomojab.pdf
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160817a25ac04b---nozuvonukazubemesuzelo.pdf
- https://big-cash.de/wp-content/plugins/super-forms/uploads/php/files/0rj9uonq9fg86umtnvksdnd9rb/vaniniviza.pdf

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