MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs pointing to compromised WordPress sites and disposable hosting, suggesting it functions as a link farm to distribute malicious content. The presence of PRC/3D content is unusual for a typical document and may be used to obfuscate malicious elements.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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PRC/3D content in PDF medium PDF_PRC_3DPDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
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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://krisoc.ru/uplcv?utm_term=excel+vba+add+sheet+after+last PDF link annotation
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f11462b9f1---gewugidonorozosa.pdfIn PDF document text
- http://anhuizhkj.com/upload_fck/file/2021-5-19/20210519132304732964.pdfIn PDF document text
- http://askort.pl/Upload/file/14645240934.pdfIn PDF document text
- https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609de5c6c917c---56103048971.pdfIn PDF document text
- http://ascensionchina.com/userfiles/file/mazozomawuxufefogexuxe.pdfIn PDF document text
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/f71a2439f8b979bb0399828c4c3c72bb/judot.pdfIn PDF document text
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd27f212ae---28865332979.pdfIn PDF document text
- http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d4a5f6ee7d---saxeji.pdfIn PDF document text
- http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/1cfd6faf6d5a979d9f530eb3dbca656c/wifurimoxegevosepeliroriv.pdfIn PDF document text
- http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16090651cb6e9f---sefofiz.pdfIn PDF document text
- https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/53838532a10100e69b94a0f380ab6ff1/xafidevup.pdfIn PDF document text
- https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/3e1eb23fb533f8ea634ff7f94d8af38b/96998333692.pdfIn PDF document text
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b6044b8f2c7---bimemawemurikatu.pdfIn PDF document text
- http://sns-russia.ru/userfiles/file/neruwawodebilixanogekusel.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ed0d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED0D | 4860 bytes |
SHA-256: 8513108c1073dac5dcc5ba9fd51c4cd175b826bf1617d63a1ef353774f0a7601 |
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font_01_sfnt_off0000fda7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFDA7 | 10940 bytes |
SHA-256: 002ca7c679492f11ee24931bc7e4e39aad66a97eb51701ba3ecc76af0eee44ae |
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font_02_sfnt_off00012343.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12343 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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