MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites, suggesting a phishing or malware distribution scheme. The document body contains garbled text and metadata, but the presence of multiple external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic strongly support the link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://chcial.ru/uplcv?utm_term=el+principe+de+la+niebla+carlos+ruiz+zafon+resumen
- https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/ad0e990fdaaabf361115ea69e4d42821/92233676099.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf6c4a1b461---81100972444.pdf
- http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160739ee56c7e4---xutasuranedufise.pdf
- https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/ukhod169pu4vkauhp9tgdpunma/29538788330.pdf
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4773b5393a---niwakubatoxes.pdf
- http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160849cdf4abed---68402331960.pdf
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce7440934a---33895653475.pdf
- http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16096c793a1f0f---wamaxoxu.pdf
- https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcb95a2e0a---59547636711.pdf
- https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/47008c473cfc9b46ead326b8b64f5e87/wepesofi.pdf
- http://vitanova-cattery.com/upload/file/48216032882.pdf
- http://bainihu.com/upfiles/editor/files/99845661511.pdf
- http://pensionpoint.cz/userfiles/files/pugubibegi.pdf
- https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/d313d70ee33efea983b961ee4c29cf2f/83330303222.pdf
- https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/03810a3250b04a9bc4bf2c2273a408b0/degawigawitamudabu.pdf
- https://www.propertyadvisersaustralia.com/wp-content/plugins/super-forms/uploads/php/files/c81b7e48090e34867813951191153fa3/86954841470.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- 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://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000141b2.bin0e1f9ad092a9a094796757b318018636fdbd4b7d5daa59574d1fae02e4852e3c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x141B2 | 5248 bytes |
font_01_sfnt_off00015363.bin5ebafd36eb22c434e4db6059bdc4ac6e9d653e76cb4179a406eb7c36ecb2efee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15363 | 12448 bytes |
font_02_sfnt_off00017b35.binff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17B35 | 4324 bytes |
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