MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The document body is heavily obfuscated and appears to be non-readable content generated by wkhtmltopdf, suggesting the primary purpose is not informational but rather to host these malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9989
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne 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://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609e86f6a3d70---jalumufiwenujamubadolema.pdf
- https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/cjvibqrhduiqm30i9j5qnp62nj/18941060072.pdf
- http://globalone-mould.com/gbw/fckfiles/20210815141843.pdf
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16091d429ca59b---66843457654.pdf
- https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/2aa4064b03bb7a8ace2c25a32f05148b/57438925867.pdf
- http://sistersaviopublicschool.com/userfiles/file/19280126810.pdf
- https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/15fckb5q49sd0o3suq8ci92pud/towawujogapetipomusunodu.pdf
- https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608247203d5ce---bigebisujuxemapafop.pdf
- http://bioterapiazabiegi.pl/obrazy/file/zowobewivesufevewiwajafig.pdf
- http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/4f9007980dc97adf8fbb29c0681b974d/79463093325.pdf
- https://www.siemers-deutschmann.de/wp-content/plugins/super-forms/uploads/php/files/33m43jk8n341m773883niq97hk/duzek.pdf
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16083aa2298efa---nefugu.pdf
- http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bc87d74c64a---58001440205.pdf
- http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16129190a34348---wigakojegidupewopij.pdf
- http://cezanart.com/userfiles/file/ponujuto.pdf
- https://amitadevnani.com/userfiles/file/lulur.pdf
- http://sireny.net/share/files/28297561837.pdf
- https://blnk.eu/userfiles/files/kamutotizozogadiwibima.pdf
- http://lasfyy.com/uploadfile/file/20210607045258309.pdf
- https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1610e7bda2dd0e---84885260965.pdf
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/a2s7kva0n6jbt6copq1b18aa8r/sodoba.pdf
- http://bangladeshceramicsociety.com/uploads/editor/files/4283884044.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=probation+period+employment+law
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c550.bina76cfd241d4c6770498c96da6b8b25f808d4d103abfabc6c4306ea3e5c01c0a0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC550 | 10724 bytes |
font_01_sfnt_off0000ddbb.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDDBB | 16792 bytes |
font_02_sfnt_off0000f5cd.bin0d7d05e80e544dc89a115409eeaee23c25210486e29cc7e72960f29dc51d1795 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5CD | 15908 bytes |
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