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, indicating a high likelihood of malicious intent. The file contains numerous embedded URLs, many pointing to compromised WordPress uploads and disposable hosting, suggesting it functions as a link farm to distribute phishing content or further malware. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics confirms the nature of these links.
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://pistant.ru/uplcv?utm_term=%D0%B3%D0%B4%D0%B7+%D1%81%D0%BF%D1%80%D0%B0%D0%B2%D0%BE%D1%87%D0%BD%D0%BE%D0%B5+%D0%BF%D0%BE%D1%81%D0%BE%D0%B1%D0%B8%D0%B5+%D0%BF%D0%BE+%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%BE%D0%BC%D1%83+%D1%8F%D0%B7%D1%8B%D0%BA%D1%83+%D1%83%D0%B7%D0%BE%D1%80%D0%BE%D0%B2%D0%B0+%D0%BD%D0%B5%D1%84%D1%91%D0%B4%D0%BE%D0%B2%D0%B0+%D1%82%D1%80%D0%B5%D1%82%D0%B8%D0%B9+%D0%BA%D0%BB%D0%B0%D1%81%D1%81
- https://evermoral.hk/upload/file/1627148096.pdf
- https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/7c860914faaf7992d207fe9eb84d3d7c/sesida.pdf
- http://omgmediatank.com/userfiles/files/xulabotidobupenijitekilo.pdf
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608edf061e3fd---gefipi.pdf
- http://valeneighbors.com/userimages/wejobasitakorufevagujij.pdf
- https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/vih0178g4mvsekfmqvj4a610hv/zujojokapupabarawit.pdf
- http://atek-ent.com/upload/file/92385630762.pdf
- https://asiaviews.org/wp-content/plugins/super-forms/uploads/php/files/1nbsfcd1c74s5ef0i2h4lquqd6/kijotewelebutegafigo.pdf
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609db65310629---84956444170.pdf
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/eb85093fb432bd21b9c49f1289b99b1e/78666635460.pdf
- https://commonlawhouse.in/userfiles/file/31087745249.pdf
- http://wonsakai.com/uploads/files/vasenoviwulanazev.pdf
- https://smartbrand.ro/mm/file/7744124508.pdf
- http://schodylux.pl/userfiles/file/16990577757.pdf
- https://pbchistoryonline.org/uploads/file/72808348578.pdf
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bb6f438e5bc---6590789064.pdf
- http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/16080e81d204cd---31792643289.pdf
- https://aydin-elektrik.com/resimler/files/pesajomawukidatalabuxuxa.pdf
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075ff54c3ed2---xebikag.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_off0000e9cd.binf62c234731bbe4b88902f78ad99402f50e1935fd6d6561113853d55218b71889 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9CD | 21184 bytes |
font_01_sfnt_off00011e9e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E9E | 16792 bytes |
font_02_sfnt_off000136b5.binc66d71a1a186dc234c74054d6aa886070c4203b4fc7245fc9762ed5708c8492b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x136B5 | 12024 bytes |
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