MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous links pointing to websites that appear to be compromised WordPress installations, serving as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of multiple distinct hosts and the use of 'utm_term' parameters suggest a coordinated effort to lure victims.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
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://inwebjor.ru/uplcv?utm_term=three+volume+novel+importance+being+earnest
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608c440d06df8---59265987074.pdf
- https://brtim.com/uploads/wysiwyg/files/49416571356.pdf
- https://areshin.ru/wp-content/plugins/super-forms/uploads/php/files/191651c727c7471b3aa8f67e5b33f048/18119653603.pdf
- https://www.erenang.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810345f0242---malexanoweg.pdf
- https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/004358b176f0dd902c326dc7c61ca5bf/60642960587.pdf
- https://ethiquedevelopers.com/wp-content/plugins/super-forms/uploads/php/files/26a4c912d5b259035f459a190a077400/25480822041.pdf
- http://ed-web.cz/userfilesfile/16532974230.pdf
- https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/b928edc97f986d2024b8d06f5d5de7d6/18581780781.pdf
- https://tkquiz.com/userfiles/file/bejemibokito.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160858f7ed5376---56031835311.pdf
- https://hyundainhapkhau.vn/upload/files/nubodibusakume.pdf
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/ga1kbs3hjulo17rse6l7eok6id/guwupuniz.pdf
- https://accesoriosalmayor.com/images/userfiles/file/29267520387.pdf
- https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/82f721ae4c59d5e500d501583abe344c/48439843418.pdf
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f802cac01---42448760039.pdf
- http://toshiba-center.ru/uploads/files/govex.pdf
- https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/2e7b87f36975db97fd8ef1e08b7ad5e2/24077724254.pdf
- https://nepalimodelagency.com/userfiles/file/44612921390.pdf
- https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/72d0240b2963ee1df373c24dcf493c8a/26514519275.pdf
- https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/c23baca400d5481af77e9e6a75c33784/ledigifaxikoti.pdf
- http://anhuifan.com/upload_fck/file/2021-5-1/20210501165604104197.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_off0001059c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1059C | 16792 bytes |
font_01_sfnt_off00011dae.binaa0a067987ddab5e3779028a03ae93772b65ec589d612268cfb943978d5b90e6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11DAE | 17640 bytes |
font_02_sfnt_off00014c0b.binbde29b6204604bc3d12ab48bb2e2387d8eee7f0981a1864657d328fca3e6e28c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14C0B | 11092 bytes |
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