MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous external URIs, many pointing to compromised WordPress upload directories, suggesting a link farm designed to redirect users to malicious content. The presence of external links and the nature of the heuristics indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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 https://crysiq.ru/uplcv?utm_term=doxycycline+before+bed
- https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/481b852b84d8c8408385e03ce0864978/83103436502.pdf
- https://questyme.ca/userfiles/file/79352220095.pdf
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/c5815t73arcoje71aq4p0s7ov3/39491274655.pdf
- http://cunningham-reunion.com/clients/7/73/7399477c88ef979e1ad3ac38e42cffcc/File/revoxobijosevijesixilemom.pdf
- http://lmleadmanagement.com/userfiles/files/55045689180.pdf
- https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/dff1f3c9bf214f5f5c64a3bfaac5b5e1/80004371310.pdf
- http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/efuo5pkfl4r8la7lo7n0p7c72u/34213725664.pdf
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a2b9b43edb4---8548207355.pdf
- http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/16078def996f15---28351546009.pdf
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb6ca3f0b8---wodez.pdf
- https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/950d826e68856502debc6f80e8d7fb4b/nisibatokarelolulopuba.pdf
- http://asupuro.com/user_data/image//file/66116399541.pdf
- http://kamnitikamini.si/upload/files/35851627558.pdf
- http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/bgh7aldsub988cuifjl2jftts0daldkj/65047279055.pdf
- https://ivaco.it/file/87883579847.pdf
- http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/62d25616e1e59934eee68947a4eaeb05/sawap.pdf
- https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/0c51383d107b61cf773b90122d8840f6/vutupugavin.pdf
- https://samoinstitute.mn/uploads/assets/file/51665989884.pdf
- https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606c859f9ea7b---19901200857.pdf
- https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c98b30b9dc5---13833628273.pdf
- http://gerocuki.hu/user/file/45821981160.pdf
- http://ip-golubev.ru/ckfinder/userfiles/files/65335185263.pdf
- https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a079c2b6358---gerem.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_off0000f118.bin415974eb6d9afca82586a21c701e2ba6e0921ba2fb6b540b87e5d185d9fdbd24 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF118 | 17284 bytes |
font_01_sfnt_off00011e4f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E4F | 16792 bytes |
font_02_sfnt_off00013666.binceccca803afd56f21097c482d4933a4ba96d8f129c575f26b19b050223f14ed6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13666 | 10396 bytes |
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