PDF malware analysis — malicious · 3fd2469bdc004a9f

MALICIOUS

PDF

82.8 KB Created: 2021-06-14 10:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 99b7140b504537cca0db3b9af3dd6898 SHA-1: bb06e7c2640763632a45a613b26813e4e1f061dd SHA-256: 3fd2469bdc004a9f7f4d109aa896aa727fe25f520b4bfda946787ca0803d6c02

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm designed to distribute malicious content. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classifier flagging further supports its malicious nature. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a search term, indicating a lure for downloading files.

Machine Learning

Nyx PDF Classifier malicious score 0.7091

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://infrive.ru/uplcv?utm_term=ramya+vasishta+full+movie+download
- http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16095bbcc74501---gesabuduwuro.pdf
- http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/53688919655.pdf
- https://stopserv.ru/files/file/jajizumaj.pdf
- http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/4f4c5fdede232186099526ee8a4d4539/25859872478.pdf
- https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/bd9310f063baa4efbc9e0e7cde9d9fda/50352544497.pdf
- http://sva-jeanroze.com/xmedia/file/vusatovaxolowusujalelu.pdf
- https://cometsecurity.in/admin/userfiles/file/pemeguxujesoli.pdf
- https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/14f92baf6ca75d2fcbc382d372c9a849/lexoniwomoraret.pdf
- http://goref.ru/files/file/34473297359.pdf
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/9078ab6eb9f4e5c889fdaf8b70ed757b/fokivisokifisijowomapo.pdf
- https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/160aa8e693569c---3709881548.pdf
- https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/894ecfa422db2be418c4deb81982046d/temabilopekesuvu.pdf
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/

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