MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm used for phishing or malware distribution. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing campaign, likely using spearphishing attachments as the initial access vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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.pirac.org/wp-content/plugins/super-forms/uploads/php/files/2b3b47ab7effeb0ebdd6036b80124e6b/35178147946.pdf
- https://playerpress.com/ckfinder/userfiles/files/33024600614.pdf
- https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160cc561787950---motowaxemasor.pdf
- https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/39fj9vhc7u8mduv5gclsadknit/38413675787.pdf
- http://www.aluvascientific.com/UserFiles/file/gopevorakubarowivamilesib.pdf
- http://planetamama.ru/files/file/tavenoxebutiniro.pdf
- https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/f4f6824da75374826d308f564a627083/63336983009.pdf
- https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/c60bd7557fa95b72c5f0b89c1c92d839/53027653956.pdf
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/80100689629ede727d902434452e6135/52271745759.pdf
- https://beaszemin.com/files/lolorim.pdf
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c652fff278e---88834541889.pdf
- http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/mf7qpdi83ucjv49rfee92p30n8/dagenizizugozefijipe.pdf
- https://senhewood.com/d/files/19066072103.pdf
- http://babamoleskine.com/files/file/50347360985.pdf
- http://jtour.vn/userfiles/file/82751931342.pdf
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/160922c9d4aa80---54400512891.pdf
- http://mictrogiang.com/userfiles/files/xutiwekitukagolowesotiza.pdf
- http://hphs1958reunion.com/clients/47465/File/2236554628.pdf
- https://chameleoncoupons.com/adgprocessing/uploads/files/61372575703.pdf
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080a63285e34---48869535840.pdf
- http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4af875628---bifepuduvijanoboda.pdf
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec9648b784---54290175928.pdf
- https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/6rg4e26c6e6cjns4qfhmulrai3/velafutuv.pdf
- https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087c1ef03919---posiba.pdf
- https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160966c2654f58---73087605304.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=online+store+business+plan+pdf
- 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_off0000f4b4.bina770d5073da2742b1f390c0d32ec0c41926142b9a765ef5f68d34eda5ffb5e7c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF4B4 | 16740 bytes |
font_01_sfnt_off00012034.bin0d6cbd1219b714f8c2a3b73a0d47f0a782ce2f74678177d5ffcf2d58fcfa5dd4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12034 | 10756 bytes |
font_02_sfnt_off000138d9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x138D9 | 16792 bytes |
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